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Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6 

* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6:
  Driver Core: devtmpfs - kernel-maintained tmpfs-based /dev
  debugfs: Modify default debugfs directory for debugging pktcdvd.
  debugfs: Modified default dir of debugfs for debugging UHCI.
  debugfs: Change debugfs directory of IWMC3200
  debugfs: Change debuhgfs directory of trace-events-sample.h
  debugfs: Fix mount directory of debugfs by default in events.txt
  hpilo: add poll f_op
  hpilo: add interrupt handler
  hpilo: staging for interrupt handling
  driver core: platform_device_add_data(): use kmemdup()
  Driver core: Add support for compatibility classes
  uio: add generic driver for PCI 2.3 devices
  driver-core: move dma-coherent.c from kernel to driver/base
  mem_class: fix bug
  mem_class: use minor as index instead of searching the array
  driver model: constify attribute groups
  UIO: remove 'default n' from Kconfig
  Driver core: Add accessor for device platform data
  Driver core: move dev_get/set_drvdata to drivers/base/dd.c
  Driver core: add new device to bus's list before probing
This commit is contained in:
Linus Torvalds 2009-09-16 08:27:10 -07:00
parent 7ea61767e4 2b2af54a5b
commit ab86e5765d
59 changed files with 1287 additions and 239 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

163
Documentation/DocBook/uio-howto.tmpl
View File

@ -25,6 +25,10 @@
<year>2006-2008</year>
<holder>Hans-Jürgen Koch.</holder>
</copyright>
<copyright>
<year>2009</year>
<holder>Red Hat Inc, Michael S. Tsirkin (mst@redhat.com)</holder>
</copyright>
<legalnotice>
<para>
@ -41,6 +45,13 @@ GPL version 2.
</abstract>
<revhistory>
<revision>
<revnumber>0.9</revnumber>
<date>2009-07-16</date>
<authorinitials>mst</authorinitials>
<revremark>Added generic pci driver
</revremark>
</revision>
<revision>
<revnumber>0.8</revnumber>
<date>2008-12-24</date>
@ -809,6 +820,158 @@ framework to set up sysfs files for this region. Simply leave it alone.
</chapter>
<chapter id="uio_pci_generic" xreflabel="Using Generic driver for PCI cards">
<?dbhtml filename="uio_pci_generic.html"?>
<title>Generic PCI UIO driver</title>
<para>
The generic driver is a kernel module named uio_pci_generic.
It can work with any device compliant to PCI 2.3 (circa 2002) and
any compliant PCI Express device. Using this, you only need to
write the userspace driver, removing the need to write
a hardware-specific kernel module.
</para>
<sect1 id="uio_pci_generic_binding">
<title>Making the driver recognize the device</title>
<para>
Since the driver does not declare any device ids, it will not get loaded
automatically and will not automatically bind to any devices, you must load it
and allocate id to the driver yourself. For example:
<programlisting>
modprobe uio_pci_generic
echo &quot;8086 10f5&quot; &gt; /sys/bus/pci/drivers/uio_pci_generic/new_id
</programlisting>
</para>
<para>
If there already is a hardware specific kernel driver for your device, the
generic driver still won't bind to it, in this case if you want to use the
generic driver (why would you?) you'll have to manually unbind the hardware
specific driver and bind the generic driver, like this:
<programlisting>
echo -n 0000:00:19.0 &gt; /sys/bus/pci/drivers/e1000e/unbind
echo -n 0000:00:19.0 &gt; /sys/bus/pci/drivers/uio_pci_generic/bind
</programlisting>
</para>
<para>
You can verify that the device has been bound to the driver
by looking for it in sysfs, for example like the following:
<programlisting>
ls -l /sys/bus/pci/devices/0000:00:19.0/driver
</programlisting>
Which if successful should print
<programlisting>
.../0000:00:19.0/driver -&gt; ../../../bus/pci/drivers/uio_pci_generic
</programlisting>
Note that the generic driver will not bind to old PCI 2.2 devices.
If binding the device failed, run the following command:
<programlisting>
dmesg
</programlisting>
and look in the output for failure reasons
</para>
</sect1>
<sect1 id="uio_pci_generic_internals">
<title>Things to know about uio_pci_generic</title>
<para>
Interrupts are handled using the Interrupt Disable bit in the PCI command
register and Interrupt Status bit in the PCI status register. All devices
compliant to PCI 2.3 (circa 2002) and all compliant PCI Express devices should
support these bits. uio_pci_generic detects this support, and won't bind to
devices which do not support the Interrupt Disable Bit in the command register.
</para>
<para>
On each interrupt, uio_pci_generic sets the Interrupt Disable bit.
This prevents the device from generating further interrupts
until the bit is cleared. The userspace driver should clear this
bit before blocking and waiting for more interrupts.
</para>
</sect1>
<sect1 id="uio_pci_generic_userspace">
<title>Writing userspace driver using uio_pci_generic</title>
<para>
Userspace driver can use pci sysfs interface, or the
libpci libray that wraps it, to talk to the device and to
re-enable interrupts by writing to the command register.
</para>
</sect1>
<sect1 id="uio_pci_generic_example">
<title>Example code using uio_pci_generic</title>
<para>
Here is some sample userspace driver code using uio_pci_generic:
<programlisting>
#include &lt;stdlib.h&gt;
#include &lt;stdio.h&gt;
#include &lt;unistd.h&gt;
#include &lt;sys/types.h&gt;
#include &lt;sys/stat.h&gt;
#include &lt;fcntl.h&gt;
#include &lt;errno.h&gt;
int main()
{
int uiofd;
int configfd;
int err;
int i;
unsigned icount;
unsigned char command_high;
uiofd = open(&quot;/dev/uio0&quot;, O_RDONLY);
if (uiofd &lt; 0) {
perror(&quot;uio open:&quot;);
return errno;
}
configfd = open(&quot;/sys/class/uio/uio0/device/config&quot;, O_RDWR);
if (uiofd &lt; 0) {
perror(&quot;config open:&quot;);
return errno;
}
/* Read and cache command value */
err = pread(configfd, &amp;command_high, 1, 5);
if (err != 1) {
perror(&quot;command config read:&quot;);
return errno;
}
command_high &amp;= ~0x4;
for(i = 0;; ++i) {
/* Print out a message, for debugging. */
if (i == 0)
fprintf(stderr, &quot;Started uio test driver.\n&quot;);
else
fprintf(stderr, &quot;Interrupts: %d\n&quot;, icount);
/****************************************/
/* Here we got an interrupt from the
device. Do something to it. */
/****************************************/
/* Re-enable interrupts. */
err = pwrite(configfd, &amp;command_high, 1, 5);
if (err != 1) {
perror(&quot;config write:&quot;);
break;
}
/* Wait for next interrupt. */
err = read(uiofd, &amp;icount, 4);
if (err != 4) {
perror(&quot;uio read:&quot;);
break;
}
}
return errno;
}
</programlisting>
</para>
</sect1>
</chapter>
<appendix id="app1">
<title>Further information</title>
<itemizedlist>

24
Documentation/trace/events.txt
View File

@ -22,12 +22,12 @@ tracing information should be printed.
---------------------------------
The events which are available for tracing can be found in the file
/debug/tracing/available_events.
/sys/kernel/debug/tracing/available_events.
To enable a particular event, such as 'sched_wakeup', simply echo it
to /debug/tracing/set_event. For example:
to /sys/kernel/debug/tracing/set_event. For example:
# echo sched_wakeup >> /debug/tracing/set_event
# echo sched_wakeup >> /sys/kernel/debug/tracing/set_event
[ Note: '>>' is necessary, otherwise it will firstly disable
all the events. ]
@ -35,15 +35,15 @@ to /debug/tracing/set_event. For example:
To disable an event, echo the event name to the set_event file prefixed
with an exclamation point:
# echo '!sched_wakeup' >> /debug/tracing/set_event
# echo '!sched_wakeup' >> /sys/kernel/debug/tracing/set_event
To disable all events, echo an empty line to the set_event file:
# echo > /debug/tracing/set_event
# echo > /sys/kernel/debug/tracing/set_event
To enable all events, echo '*:*' or '*:' to the set_event file:
# echo *:* > /debug/tracing/set_event
# echo *:* > /sys/kernel/debug/tracing/set_event
The events are organized into subsystems, such as ext4, irq, sched,
etc., and a full event name looks like this: <subsystem>:<event>. The
@ -52,29 +52,29 @@ file. All of the events in a subsystem can be specified via the syntax
"<subsystem>:*"; for example, to enable all irq events, you can use the
command:
# echo 'irq:*' > /debug/tracing/set_event
# echo 'irq:*' > /sys/kernel/debug/tracing/set_event
2.2 Via the 'enable' toggle
---------------------------
The events available are also listed in /debug/tracing/events/ hierarchy
The events available are also listed in /sys/kernel/debug/tracing/events/ hierarchy
of directories.
To enable event 'sched_wakeup':
# echo 1 > /debug/tracing/events/sched/sched_wakeup/enable
# echo 1 > /sys/kernel/debug/tracing/events/sched/sched_wakeup/enable
To disable it:
# echo 0 > /debug/tracing/events/sched/sched_wakeup/enable
# echo 0 > /sys/kernel/debug/tracing/events/sched/sched_wakeup/enable
To enable all events in sched subsystem:
# echo 1 > /debug/tracing/events/sched/enable
# echo 1 > /sys/kernel/debug/tracing/events/sched/enable
To eanble all events:
# echo 1 > /debug/tracing/events/enable
# echo 1 > /sys/kernel/debug/tracing/events/enable
When reading one of these enable files, there are four results:

7
MAINTAINERS
View File

@ -2218,6 +2218,13 @@ T: git git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic.git
S: Maintained
F: include/asm-generic
GENERIC UIO DRIVER FOR PCI DEVICES
M: Michael S. Tsirkin <mst@redhat.com>
L: kvm@vger.kernel.org
L: linux-kernel@vger.kernel.org
S: Supported
F: drivers/uio/uio_pci_generic.c
GFS2 FILE SYSTEM
M: Steven Whitehouse <swhiteho@redhat.com>
L: cluster-devel@redhat.com

2
block/genhd.c
View File

@ -903,7 +903,7 @@ static struct attribute_group disk_attr_group = {
.attrs = disk_attrs,
};
static struct attribute_group *disk_attr_groups[] = {
static const struct attribute_group *disk_attr_groups[] = {
&disk_attr_group,
NULL
};

25
drivers/base/Kconfig
View File

@ -8,6 +8,31 @@ config UEVENT_HELPER_PATH
Path to uevent helper program forked by the kernel for
every uevent.
config DEVTMPFS
bool "Create a kernel maintained /dev tmpfs (EXPERIMENTAL)"
depends on HOTPLUG && SHMEM && TMPFS
help
This creates a tmpfs filesystem, and mounts it at bootup
and mounts it at /dev. The kernel driver core creates device
nodes for all registered devices in that filesystem. All device
nodes are owned by root and have the default mode of 0600.
Userspace can add and delete the nodes as needed. This is
intended to simplify bootup, and make it possible to delay
the initial coldplug at bootup done by udev in userspace.
It should also provide a simpler way for rescue systems
to bring up a kernel with dynamic major/minor numbers.
Meaningful symlinks, permissions and device ownership must
still be handled by userspace.
If unsure, say N here.
config DEVTMPFS_MOUNT
bool "Automount devtmpfs at /dev"
depends on DEVTMPFS
help
This will mount devtmpfs at /dev if the kernel mounts the root
filesystem. It will not affect initramfs based mounting.
If unsure, say N here.
config STANDALONE
bool "Select only drivers that don't need compile-time external firmware" if EXPERIMENTAL
default y

2
drivers/base/Makefile
View File

@ -4,8 +4,10 @@ obj-y := core.o sys.o bus.o dd.o \
driver.o class.o platform.o \
cpu.o firmware.o init.o map.o devres.o \
attribute_container.o transport_class.o
obj-$(CONFIG_DEVTMPFS) += devtmpfs.o
obj-y += power/
obj-$(CONFIG_HAS_DMA) += dma-mapping.o
obj-$(CONFIG_HAVE_GENERIC_DMA_COHERENT) += dma-coherent.o
obj-$(CONFIG_ISA) += isa.o
obj-$(CONFIG_FW_LOADER) += firmware_class.o
obj-$(CONFIG_NUMA) += node.o

13
drivers/base/base.h
View File

@ -70,6 +70,8 @@ struct class_private {
* @knode_parent - node in sibling list
* @knode_driver - node in driver list
* @knode_bus - node in bus list
* @driver_data - private pointer for driver specific info. Will turn into a
* list soon.
* @device - pointer back to the struct class that this structure is
* associated with.
*
@ -80,6 +82,7 @@ struct device_private {
struct klist_node knode_parent;
struct klist_node knode_driver;
struct klist_node knode_bus;
void *driver_data;
struct device *device;
};
#define to_device_private_parent(obj) \
@ -89,6 +92,8 @@ struct device_private {
#define to_device_private_bus(obj) \
container_of(obj, struct device_private, knode_bus)
extern int device_private_init(struct device *dev);
/* initialisation functions */
extern int devices_init(void);
extern int buses_init(void);
@ -104,7 +109,7 @@ extern int system_bus_init(void);
extern int cpu_dev_init(void);
extern int bus_add_device(struct device *dev);
extern void bus_attach_device(struct device *dev);
extern void bus_probe_device(struct device *dev);
extern void bus_remove_device(struct device *dev);
extern int bus_add_driver(struct device_driver *drv);
@ -134,3 +139,9 @@ static inline void module_add_driver(struct module *mod,
struct device_driver *drv) { }
static inline void module_remove_driver(struct device_driver *drv) { }
#endif
#ifdef CONFIG_DEVTMPFS
extern int devtmpfs_init(void);
#else
static inline int devtmpfs_init(void) { return 0; }
#endif

23
drivers/base/bus.c
View File

@ -459,8 +459,9 @@ static inline void remove_deprecated_bus_links(struct device *dev) { }
* bus_add_device - add device to bus
* @dev: device being added
*
* - Add device's bus attributes.
* - Create links to device's bus.
* - Add the device to its bus's list of devices.
* - Create link to device's bus.
*/
int bus_add_device(struct device *dev)
{
@ -483,6 +484,7 @@ int bus_add_device(struct device *dev)
error = make_deprecated_bus_links(dev);
if (error)
goto out_deprecated;
klist_add_tail(&dev->p->knode_bus, &bus->p->klist_devices);
}
return 0;
@ -498,24 +500,19 @@ out_put:
}
/**
* bus_attach_device - add device to bus
* @dev: device tried to attach to a driver
* bus_probe_device - probe drivers for a new device
* @dev: device to probe
*
* - Add device to bus's list of devices.
* - Try to attach to driver.
* - Automatically probe for a driver if the bus allows it.
*/
void bus_attach_device(struct device *dev)
void bus_probe_device(struct device *dev)
{
struct bus_type *bus = dev->bus;
int ret = 0;
int ret;
if (bus) {
if (bus->p->drivers_autoprobe)
ret = device_attach(dev);
if (bus && bus->p->drivers_autoprobe) {
ret = device_attach(dev);
WARN_ON(ret < 0);
if (ret >= 0)
klist_add_tail(&dev->p->knode_bus,
&bus->p->klist_devices);
}
}

87
drivers/base/class.c
View File

@ -488,6 +488,93 @@ void class_interface_unregister(struct class_interface *class_intf)
class_put(parent);
}
struct class_compat {
struct kobject *kobj;
};
/**
* class_compat_register - register a compatibility class
* @name: the name of the class
*
* Compatibility class are meant as a temporary user-space compatibility
* workaround when converting a family of class devices to a bus devices.
*/
struct class_compat *class_compat_register(const char *name)
{
struct class_compat *cls;
cls = kmalloc(sizeof(struct class_compat), GFP_KERNEL);
if (!cls)
return NULL;
cls->kobj = kobject_create_and_add(name, &class_kset->kobj);
if (!cls->kobj) {
kfree(cls);
return NULL;
}
return cls;
}
EXPORT_SYMBOL_GPL(class_compat_register);
/**
* class_compat_unregister - unregister a compatibility class
* @cls: the class to unregister
*/
void class_compat_unregister(struct class_compat *cls)
{
kobject_put(cls->kobj);
kfree(cls);
}
EXPORT_SYMBOL_GPL(class_compat_unregister);
/**
* class_compat_create_link - create a compatibility class device link to
* a bus device
* @cls: the compatibility class
* @dev: the target bus device
* @device_link: an optional device to which a "device" link should be created
*/
int class_compat_create_link(struct class_compat *cls, struct device *dev,
struct device *device_link)
{
int error;
error = sysfs_create_link(cls->kobj, &dev->kobj, dev_name(dev));
if (error)
return error;
/*
* Optionally add a "device" link (typically to the parent), as a
* class device would have one and we want to provide as much
* backwards compatibility as possible.
*/
if (device_link) {
error = sysfs_create_link(&dev->kobj, &device_link->kobj,
"device");
if (error)
sysfs_remove_link(cls->kobj, dev_name(dev));
}
return error;
}
EXPORT_SYMBOL_GPL(class_compat_create_link);
/**
* class_compat_remove_link - remove a compatibility class device link to
* a bus device
* @cls: the compatibility class
* @dev: the target bus device
* @device_link: an optional device to which a "device" link was previously
* created
*/
void class_compat_remove_link(struct class_compat *cls, struct device *dev,
struct device *device_link)
{
if (device_link)
sysfs_remove_link(&dev->kobj, "device");
sysfs_remove_link(cls->kobj, dev_name(dev));
}
EXPORT_SYMBOL_GPL(class_compat_remove_link);
int __init classes_init(void)
{
class_kset = kset_create_and_add("class", NULL, NULL);

29
drivers/base/core.c
View File

@ -341,7 +341,7 @@ static void device_remove_attributes(struct device *dev,
}
static int device_add_groups(struct device *dev,
struct attribute_group **groups)
const struct attribute_group **groups)
{
int error = 0;
int i;
@ -361,7 +361,7 @@ static int device_add_groups(struct device *dev,
}
static void device_remove_groups(struct device *dev,
struct attribute_group **groups)
const struct attribute_group **groups)
{
int i;
@ -843,6 +843,17 @@ static void device_remove_sys_dev_entry(struct device *dev)
}
}
int device_private_init(struct device *dev)
{
dev->p = kzalloc(sizeof(*dev->p), GFP_KERNEL);
if (!dev->p)
return -ENOMEM;
dev->p->device = dev;
klist_init(&dev->p->klist_children, klist_children_get,
klist_children_put);
return 0;
}
/**
* device_add - add device to device hierarchy.
* @dev: device.
@ -868,14 +879,11 @@ int device_add(struct device *dev)
if (!dev)
goto done;
dev->p = kzalloc(sizeof(*dev->p), GFP_KERNEL);
if (!dev->p) {
error = -ENOMEM;
goto done;
error = device_private_init(dev);
if (error)
goto done;
}
dev->p->device = dev;
klist_init(&dev->p->klist_children, klist_children_get,
klist_children_put);
/*
* for statically allocated devices, which should all be converted
@ -921,6 +929,8 @@ int device_add(struct device *dev)
error = device_create_sys_dev_entry(dev);
if (error)
goto devtattrError;
devtmpfs_create_node(dev);
}
error = device_add_class_symlinks(dev);
@ -945,7 +955,7 @@ int device_add(struct device *dev)
BUS_NOTIFY_ADD_DEVICE, dev);
kobject_uevent(&dev->kobj, KOBJ_ADD);
bus_attach_device(dev);
bus_probe_device(dev);
if (parent)
klist_add_tail(&dev->p->knode_parent,
&parent->p->klist_children);
@ -1067,6 +1077,7 @@ void device_del(struct device *dev)
if (parent)
klist_del(&dev->p->knode_parent);
if (MAJOR(dev->devt)) {
devtmpfs_delete_node(dev);
device_remove_sys_dev_entry(dev);
device_remove_file(dev, &devt_attr);
}

31
drivers/base/dd.c
View File

@ -11,8 +11,8 @@
*
* Copyright (c) 2002-5 Patrick Mochel
* Copyright (c) 2002-3 Open Source Development Labs
* Copyright (c) 2007 Greg Kroah-Hartman <gregkh@suse.de>
* Copyright (c) 2007 Novell Inc.
* Copyright (c) 2007-2009 Greg Kroah-Hartman <gregkh@suse.de>
* Copyright (c) 2007-2009 Novell Inc.
*
* This file is released under the GPLv2
*/
@ -391,3 +391,30 @@ void driver_detach(struct device_driver *drv)
put_device(dev);
}
}
/*
* These exports can't be _GPL due to .h files using this within them, and it
* might break something that was previously working...
*/
void *dev_get_drvdata(const struct device *dev)
{
if (dev && dev->p)
return dev->p->driver_data;
return NULL;
}
EXPORT_SYMBOL(dev_get_drvdata);
void dev_set_drvdata(struct device *dev, void *data)
{
int error;
if (!dev)
return;
if (!dev->p) {
error = device_private_init(dev);
if (error)
return;
}
dev->p->driver_data = data;
}
EXPORT_SYMBOL(dev_set_drvdata);

367
drivers/base/devtmpfs.c Normal file
View File

@ -0,0 +1,367 @@
/*
* devtmpfs - kernel-maintained tmpfs-based /dev
*
* Copyright (C) 2009, Kay Sievers <kay.sievers@vrfy.org>
*
* During bootup, before any driver core device is registered,
* devtmpfs, a tmpfs-based filesystem is created. Every driver-core
* device which requests a device node, will add a node in this
* filesystem. The node is named after the the name of the device,
* or the susbsytem can provide a custom name. All devices are
* owned by root and have a mode of 0600.
*/
#include <linux/kernel.h>
#include <linux/syscalls.h>
#include <linux/mount.h>
#include <linux/device.h>
#include <linux/genhd.h>
#include <linux/namei.h>
#include <linux/fs.h>
#include <linux/shmem_fs.h>
#include <linux/cred.h>
#include <linux/init_task.h>
static struct vfsmount *dev_mnt;
#if defined CONFIG_DEVTMPFS_MOUNT
static int dev_mount = 1;
#else
static int dev_mount;
#endif
static int __init mount_param(char *str)
{
dev_mount = simple_strtoul(str, NULL, 0);
return 1;
}
__setup("devtmpfs.mount=", mount_param);
static int dev_get_sb(struct file_system_type *fs_type, int flags,
const char *dev_name, void *data, struct vfsmount *mnt)
{
return get_sb_single(fs_type, flags, data, shmem_fill_super, mnt);
}
static struct file_system_type dev_fs_type = {
.name = "devtmpfs",
.get_sb = dev_get_sb,
.kill_sb = kill_litter_super,
};
#ifdef CONFIG_BLOCK
static inline int is_blockdev(struct device *dev)
{
return dev->class == &block_class;
}
#else
static inline int is_blockdev(struct device *dev) { return 0; }
#endif
static int dev_mkdir(const char *name, mode_t mode)
{
struct nameidata nd;
struct dentry *dentry;
int err;
err = vfs_path_lookup(dev_mnt->mnt_root, dev_mnt,
name, LOOKUP_PARENT, &nd);
if (err)
return err;
dentry = lookup_create(&nd, 1);
if (!IS_ERR(dentry)) {
err = vfs_mkdir(nd.path.dentry->d_inode, dentry, mode);
dput(dentry);
} else {
err = PTR_ERR(dentry);
}
mutex_unlock(&nd.path.dentry->d_inode->i_mutex);
path_put(&nd.path);
return err;
}
static int create_path(const char *nodepath)
{
char *path;
struct nameidata nd;
int err = 0;
path = kstrdup(nodepath, GFP_KERNEL);
if (!path)
return -ENOMEM;
err = vfs_path_lookup(dev_mnt->mnt_root, dev_mnt,
path, LOOKUP_PARENT, &nd);
if (err == 0) {
struct dentry *dentry;
/* create directory right away */
dentry = lookup_create(&nd, 1);
if (!IS_ERR(dentry)) {
err = vfs_mkdir(nd.path.dentry->d_inode,
dentry, 0755);
dput(dentry);
}
mutex_unlock(&nd.path.dentry->d_inode->i_mutex);
path_put(&nd.path);
} else if (err == -ENOENT) {
char *s;
/* parent directories do not exist, create them */
s = path;
while (1) {
s = strchr(s, '/');
if (!s)
break;
s[0] = '\0';
err = dev_mkdir(path, 0755);
if (err && err != -EEXIST)
break;
s[0] = '/';
s++;
}
}
kfree(path);
return err;
}
int devtmpfs_create_node(struct device *dev)
{
const char *tmp = NULL;
const char *nodename;
const struct cred *curr_cred;
mode_t mode;
struct nameidata nd;
struct dentry *dentry;
int err;
if (!dev_mnt)
return 0;
nodename = device_get_nodename(dev, &tmp);
if (!nodename)
return -ENOMEM;
if (is_blockdev(dev))
mode = S_IFBLK|0600;
else
mode = S_IFCHR|0600;
curr_cred = override_creds(&init_cred);
err = vfs_path_lookup(dev_mnt->mnt_root, dev_mnt,
nodename, LOOKUP_PARENT, &nd);
if (err == -ENOENT) {
/* create missing parent directories */
create_path(nodename);
err = vfs_path_lookup(dev_mnt->mnt_root, dev_mnt,
nodename, LOOKUP_PARENT, &nd);
if (err)
goto out;
}
dentry = lookup_create(&nd, 0);
if (!IS_ERR(dentry)) {
err = vfs_mknod(nd.path.dentry->d_inode,
dentry, mode, dev->devt);
/* mark as kernel created inode */
if (!err)
dentry->d_inode->i_private = &dev_mnt;
dput(dentry);
} else {
err = PTR_ERR(dentry);
}
mutex_unlock(&nd.path.dentry->d_inode->i_mutex);
path_put(&nd.path);
out:
kfree(tmp);
revert_creds(curr_cred);
return err;
}
static int dev_rmdir(const char *name)
{
struct nameidata nd;
struct dentry *dentry;
int err;
err = vfs_path_lookup(dev_mnt->mnt_root, dev_mnt,
name, LOOKUP_PARENT, &nd);
if (err)
return err;
mutex_lock_nested(&nd.path.dentry->d_inode->i_mutex, I_MUTEX_PARENT);
dentry = lookup_one_len(nd.last.name, nd.path.dentry, nd.last.len);
if (!IS_ERR(dentry)) {
if (dentry->d_inode)
err = vfs_rmdir(nd.path.dentry->d_inode, dentry);
else
err = -ENOENT;
dput(dentry);
} else {
err = PTR_ERR(dentry);
}
mutex_unlock(&nd.path.dentry->d_inode->i_mutex);
path_put(&nd.path);
return err;
}
static int delete_path(const char *nodepath)
{
const char *path;
int err = 0;
path = kstrdup(nodepath, GFP_KERNEL);
if (!path)
return -ENOMEM;
while (1) {
char *base;
base = strrchr(path, '/');
if (!base)
break;
base[0] = '\0';
err = dev_rmdir(path);
if (err)
break;
}
kfree(path);
return err;
}
static int dev_mynode(struct device *dev, struct inode *inode, struct kstat *stat)
{
/* did we create it */
if (inode->i_private != &dev_mnt)
return 0;
/* does the dev_t match */
if (is_blockdev(dev)) {
if (!S_ISBLK(stat->mode))
return 0;
} else {
if (!S_ISCHR(stat->mode))
return 0;
}
if (stat->rdev != dev->devt)
return 0;
/* ours */
return 1;
}
int devtmpfs_delete_node(struct device *dev)
{
const char *tmp = NULL;
const char *nodename;
const struct cred *curr_cred;
struct nameidata nd;
struct dentry *dentry;
struct kstat stat;
int deleted = 1;
int err;
if (!dev_mnt)
return 0;
nodename = device_get_nodename(dev, &tmp);
if (!nodename)
return -ENOMEM;
curr_cred = override_creds(&init_cred);
err = vfs_path_lookup(dev_mnt->mnt_root, dev_mnt,
nodename, LOOKUP_PARENT, &nd);
if (err)
goto out;
mutex_lock_nested(&nd.path.dentry->d_inode->i_mutex, I_MUTEX_PARENT);
dentry = lookup_one_len(nd.last.name, nd.path.dentry, nd.last.len);
if (!IS_ERR(dentry)) {
if (dentry->d_inode) {
err = vfs_getattr(nd.path.mnt, dentry, &stat);
if (!err && dev_mynode(dev, dentry->d_inode, &stat)) {
err = vfs_unlink(nd.path.dentry->d_inode,
dentry);
if (!err || err == -ENOENT)
deleted = 1;
}
} else {
err = -ENOENT;
}
dput(dentry);
} else {
err = PTR_ERR(dentry);
}
mutex_unlock(&nd.path.dentry->d_inode->i_mutex);
path_put(&nd.path);
if (deleted && strchr(nodename, '/'))
delete_path(nodename);
out:
kfree(tmp);
revert_creds(curr_cred);
return err;
}
/*
* If configured, or requested by the commandline, devtmpfs will be
* auto-mounted after the kernel mounted the root filesystem.
*/
int devtmpfs_mount(const char *mountpoint)
{
struct path path;
int err;
if (!dev_mount)
return 0;
if (!dev_mnt)
return 0;
err = kern_path(mountpoint, LOOKUP_FOLLOW, &path);
if (err)
return err;
err = do_add_mount(dev_mnt, &path, 0, NULL);
if (err)
printk(KERN_INFO "devtmpfs: error mounting %i\n", err);
else
printk(KERN_INFO "devtmpfs: mounted\n");
path_put(&path);
return err;
}
/*
* Create devtmpfs instance, driver-core devices will add their device
* nodes here.
*/
int __init devtmpfs_init(void)
{
int err;
struct vfsmount *mnt;
err = register_filesystem(&dev_fs_type);
if (err) {
printk(KERN_ERR "devtmpfs: unable to register devtmpfs "
"type %i\n", err);
return err;
}
mnt = kern_mount(&dev_fs_type);
if (IS_ERR(mnt)) {
err = PTR_ERR(mnt);
printk(KERN_ERR "devtmpfs: unable to create devtmpfs %i\n", err);
unregister_filesystem(&dev_fs_type);
return err;
}
dev_mnt = mnt;
printk(KERN_INFO "devtmpfs: initialized\n");
return 0;
}

0
kernel/dma-coherent.c → drivers/base/dma-coherent.c
View File

4
drivers/base/driver.c
View File

@ -181,7 +181,7 @@ void put_driver(struct device_driver *drv)
EXPORT_SYMBOL_GPL(put_driver);
static int driver_add_groups(struct device_driver *drv,
struct attribute_group **groups)
const struct attribute_group **groups)
{
int error = 0;
int i;
@ -201,7 +201,7 @@ static int driver_add_groups(struct device_driver *drv,
}
static void driver_remove_groups(struct device_driver *drv,
struct attribute_group **groups)
const struct attribute_group **groups)
{
int i;

1
drivers/base/init.c
View File

@ -20,6 +20,7 @@
void __init driver_init(void)
{
/* These are the core pieces */
devtmpfs_init();
devices_init();
buses_init();
classes_init();

8
drivers/base/platform.c
View File

@ -10,6 +10,7 @@
* information.
*/
#include <linux/string.h>
#include <linux/platform_device.h>
#include <linux/module.h>
#include <linux/init.h>
@ -213,14 +214,13 @@ EXPORT_SYMBOL_GPL(platform_device_add_resources);
int platform_device_add_data(struct platform_device *pdev, const void *data,
size_t size)
{
void *d;
void *d = kmemdup(data, size, GFP_KERNEL);
d = kmalloc(size, GFP_KERNEL);
if (d) {
memcpy(d, data, size);
pdev->dev.platform_data = d;
return 0;
}
return d ? 0 : -ENOMEM;
return -ENOMEM;
}
EXPORT_SYMBOL_GPL(platform_device_add_data);

2
drivers/block/cciss.c
View File

@ -572,7 +572,7 @@ static struct attribute_group cciss_dev_attr_group = {
.attrs = cciss_dev_attrs,
};
static struct attribute_group *cciss_dev_attr_groups[] = {
static const struct attribute_group *cciss_dev_attr_groups[] = {
&cciss_dev_attr_group,
NULL
};

2
drivers/block/pktcdvd.c
View File

@ -92,7 +92,7 @@ static struct mutex ctl_mutex; /* Serialize open/close/setup/teardown */
static mempool_t *psd_pool;
static struct class *class_pktcdvd = NULL; /* /sys/class/pktcdvd */
static struct dentry *pkt_debugfs_root = NULL; /* /debug/pktcdvd */
static struct dentry *pkt_debugfs_root = NULL; /* /sys/kernel/debug/pktcdvd */
/* forward declaration */
static int pkt_setup_dev(dev_t dev, dev_t* pkt_dev);

82
drivers/char/mem.c
View File

@ -864,71 +864,67 @@ static const struct file_operations kmsg_fops = {
.write = kmsg_write,
};
static const struct {
unsigned int minor;
char *name;
umode_t mode;
const struct file_operations *fops;
struct backing_dev_info *dev_info;
} devlist[] = { /* list of minor devices */
{1, "mem", S_IRUSR | S_IWUSR | S_IRGRP, &mem_fops,
&directly_mappable_cdev_bdi},
static const struct memdev {
const char *name;
const struct file_operations *fops;
struct backing_dev_info *dev_info;
} devlist[] = {
[ 1] = { "mem", &mem_fops, &directly_mappable_cdev_bdi },
#ifdef CONFIG_DEVKMEM
{2, "kmem", S_IRUSR | S_IWUSR | S_IRGRP, &kmem_fops,
&directly_mappable_cdev_bdi},
[ 2] = { "kmem", &kmem_fops, &directly_mappable_cdev_bdi },
#endif
{3, "null", S_IRUGO | S_IWUGO, &null_fops, NULL},
[ 3] = {"null", &null_fops, NULL },
#ifdef CONFIG_DEVPORT
{4, "port", S_IRUSR | S_IWUSR | S_IRGRP, &port_fops, NULL},
[ 4] = { "port", &port_fops, NULL },
#endif
{5, "zero", S_IRUGO | S_IWUGO, &zero_fops, &zero_bdi},
{7, "full", S_IRUGO | S_IWUGO, &full_fops, NULL},
{8, "random", S_IRUGO | S_IWUSR, &random_fops, NULL},
{9, "urandom", S_IRUGO | S_IWUSR, &urandom_fops, NULL},
{11,"kmsg", S_IRUGO | S_IWUSR, &kmsg_fops, NULL},
[ 5] = { "zero", &zero_fops, &zero_bdi },
[ 7] = { "full", &full_fops, NULL },
[ 8] = { "random", &random_fops, NULL },
[ 9] = { "urandom", &urandom_fops, NULL },
[11] = { "kmsg", &kmsg_fops, NULL },
#ifdef CONFIG_CRASH_DUMP
{12,"oldmem", S_IRUSR | S_IWUSR | S_IRGRP, &oldmem_fops, NULL},
[12] = { "oldmem", &oldmem_fops, NULL },
#endif
};
static int memory_open(struct inode *inode, struct file *filp)
{
int ret = 0;
int i;
int minor;
const struct memdev *dev;
int ret = -ENXIO;
lock_kernel();
for (i = 0; i < ARRAY_SIZE(devlist); i++) {
if (devlist[i].minor == iminor(inode)) {
filp->f_op = devlist[i].fops;
if (devlist[i].dev_info) {
filp->f_mapping->backing_dev_info =
devlist[i].dev_info;
}
minor = iminor(inode);
if (minor >= ARRAY_SIZE(devlist))
goto out;
break;
}
}
dev = &devlist[minor];
if (!dev->fops)
goto out;
if (i == ARRAY_SIZE(devlist))
ret = -ENXIO;
filp->f_op = dev->fops;
if (dev->dev_info)
filp->f_mapping->backing_dev_info = dev->dev_info;
if (dev->fops->open)
ret = dev->fops->open(inode, filp);
else
if (filp->f_op && filp->f_op->open)
ret = filp->f_op->open(inode, filp);
ret = 0;
out:
unlock_kernel();
return ret;
}
static const struct file_operations memory_fops = {
.open = memory_open, /* just a selector for the real open */
.open = memory_open,
};
static struct class *mem_class;
static int __init chr_dev_init(void)
{
int i;
int minor;
int err;
err = bdi_init(&zero_bdi);
@ -939,10 +935,12 @@ static int __init chr_dev_init(void)
printk("unable to get major %d for memory devs\n", MEM_MAJOR);
mem_class = class_create(THIS_MODULE, "mem");
for (i = 0; i < ARRAY_SIZE(devlist); i++)
device_create(mem_class, NULL,
MKDEV(MEM_MAJOR, devlist[i].minor), NULL,
devlist[i].name);
for (minor = 1; minor < ARRAY_SIZE(devlist); minor++) {
if (!devlist[minor].name)
continue;
device_create(mem_class, NULL, MKDEV(MEM_MAJOR, minor),
NULL, devlist[minor].name);
}
return 0;
}

2
drivers/firewire/core-device.c
View File

@ -312,7 +312,7 @@ static void init_fw_attribute_group(struct device *dev,
group->groups[0] = &group->group;
group->groups[1] = NULL;
group->group.attrs = group->attrs;
dev->groups = group->groups;
dev->groups = (const struct attribute_group **) group->groups;
}
static ssize_t modalias_show(struct device *dev,

2
drivers/firmware/dmi-id.c
View File

@ -139,7 +139,7 @@ static struct attribute_group sys_dmi_attribute_group = {
.attrs = sys_dmi_attributes,
};
static struct attribute_group* sys_dmi_attribute_groups[] = {
static const struct attribute_group* sys_dmi_attribute_groups[] = {
&sys_dmi_attribute_group,
NULL
};

2
drivers/infiniband/hw/ehca/ehca_main.c
View File

@ -623,7 +623,7 @@ static struct attribute_group ehca_drv_attr_grp = {
.attrs = ehca_drv_attrs
};
static struct attribute_group *ehca_drv_attr_groups[] = {
static const struct attribute_group *ehca_drv_attr_groups[] = {
&ehca_drv_attr_grp,
NULL,
};

2
drivers/infiniband/hw/ipath/ipath_kernel.h
View File

@ -1286,7 +1286,7 @@ struct device_driver;
extern const char ib_ipath_version[];
extern struct attribute_group *ipath_driver_attr_groups[];
extern const struct attribute_group *ipath_driver_attr_groups[];
int ipath_device_create_group(struct device *, struct ipath_devdata *);
void ipath_device_remove_group(struct device *, struct ipath_devdata *);

2
drivers/infiniband/hw/ipath/ipath_sysfs.c
View File

@ -1069,7 +1069,7 @@ static ssize_t show_tempsense(struct device *dev,
return ret;
}
struct attribute_group *ipath_driver_attr_groups[] = {
const struct attribute_group *ipath_driver_attr_groups[] = {
&driver_attr_group,
NULL,
};

2
drivers/input/input.c
View File

@ -1144,7 +1144,7 @@ static struct attribute_group input_dev_caps_attr_group = {
.attrs = input_dev_caps_attrs,
};
static struct attribute_group *input_dev_attr_groups[] = {
static const struct attribute_group *input_dev_attr_groups[] = {
&input_dev_attr_group,
&input_dev_id_attr_group,
&input_dev_caps_attr_group,

4
drivers/misc/enclosure.c
View File

@ -238,7 +238,7 @@ static void enclosure_component_release(struct device *dev)
put_device(dev->parent);
}
static struct attribute_group *enclosure_groups[];
static const struct attribute_group *enclosure_groups[];
/**
* enclosure_component_register - add a particular component to an enclosure
@ -536,7 +536,7 @@ static struct attribute_group enclosure_group = {
.attrs = enclosure_component_attrs,
};
static struct attribute_group *enclosure_groups[] = {
static const struct attribute_group *enclosure_groups[] = {
&enclosure_group,
NULL
};

290
drivers/misc/hpilo.c
View File

@ -13,6 +13,7 @@
#include <linux/module.h>
#include <linux/fs.h>
#include <linux/pci.h>
#include <linux/interrupt.h>
#include <linux/ioport.h>
#include <linux/device.h>
#include <linux/file.h>
@ -21,6 +22,8 @@
#include <linux/delay.h>
#include <linux/uaccess.h>
#include <linux/io.h>
#include <linux/wait.h>
#include <linux/poll.h>
#include "hpilo.h"
static struct class *ilo_class;
@ -61,9 +64,10 @@ static inline int desc_mem_sz(int nr_entry)
static int fifo_enqueue(struct ilo_hwinfo *hw, char *fifobar, int entry)
{
struct fifo *fifo_q = FIFOBARTOHANDLE(fifobar);
unsigned long flags;
int ret = 0;
spin_lock(&hw->fifo_lock);
spin_lock_irqsave(&hw->fifo_lock, flags);
if (!(fifo_q->fifobar[(fifo_q->tail + 1) & fifo_q->imask]
& ENTRY_MASK_O)) {
fifo_q->fifobar[fifo_q->tail & fifo_q->imask] |=
@ -71,7 +75,7 @@ static int fifo_enqueue(struct ilo_hwinfo *hw, char *fifobar, int entry)
fifo_q->tail += 1;
ret = 1;
}
spin_unlock(&hw->fifo_lock);
spin_unlock_irqrestore(&hw->fifo_lock, flags);
return ret;
}
@ -79,10 +83,11 @@ static int fifo_enqueue(struct ilo_hwinfo *hw, char *fifobar, int entry)
static int fifo_dequeue(struct ilo_hwinfo *hw, char *fifobar, int *entry)
{
struct fifo *fifo_q = FIFOBARTOHANDLE(fifobar);
unsigned long flags;
int ret = 0;
u64 c;
spin_lock(&hw->fifo_lock);
spin_lock_irqsave(&hw->fifo_lock, flags);
c = fifo_q->fifobar[fifo_q->head & fifo_q->imask];
if (c & ENTRY_MASK_C) {
if (entry)
@ -93,7 +98,23 @@ static int fifo_dequeue(struct ilo_hwinfo *hw, char *fifobar, int *entry)
fifo_q->head += 1;
ret = 1;
}
spin_unlock(&hw->fifo_lock);
spin_unlock_irqrestore(&hw->fifo_lock, flags);
return ret;
}
static int fifo_check_recv(struct ilo_hwinfo *hw, char *fifobar)
{
struct fifo *fifo_q = FIFOBARTOHANDLE(fifobar);
unsigned long flags;
int ret = 0;
u64 c;
spin_lock_irqsave(&hw->fifo_lock, flags);
c = fifo_q->fifobar[fifo_q->head & fifo_q->imask];
if (c & ENTRY_MASK_C)
ret = 1;
spin_unlock_irqrestore(&hw->fifo_lock, flags);
return ret;
}
@ -142,6 +163,13 @@ static int ilo_pkt_dequeue(struct ilo_hwinfo *hw, struct ccb *ccb,
return ret;
}
static int ilo_pkt_recv(struct ilo_hwinfo *hw, struct ccb *ccb)
{
char *fifobar = ccb->ccb_u3.recv_fifobar;
return fifo_check_recv(hw, fifobar);
}
static inline void doorbell_set(struct ccb *ccb)
{
iowrite8(1, ccb->ccb_u5.db_base);
@ -151,6 +179,7 @@ static inline void doorbell_clr(struct ccb *ccb)
{
iowrite8(2, ccb->ccb_u5.db_base);
}
static inline int ctrl_set(int l2sz, int idxmask, int desclim)
{
int active = 0, go = 1;
@ -160,6 +189,7 @@ static inline int ctrl_set(int l2sz, int idxmask, int desclim)
active << CTRL_BITPOS_A |
go << CTRL_BITPOS_G;
}
static void ctrl_setup(struct ccb *ccb, int nr_desc, int l2desc_sz)
{
/* for simplicity, use the same parameters for send and recv ctrls */
@ -192,13 +222,10 @@ static void fifo_setup(void *base_addr, int nr_entry)
static void ilo_ccb_close(struct pci_dev *pdev, struct ccb_data *data)
{
struct ccb *driver_ccb;
struct ccb __iomem *device_ccb;
struct ccb *driver_ccb = &data->driver_ccb;
struct ccb __iomem *device_ccb = data->mapped_ccb;
int retries;
driver_ccb = &data->driver_ccb;
device_ccb = data->mapped_ccb;
/* complicated dance to tell the hw we are stopping */
doorbell_clr(driver_ccb);
iowrite32(ioread32(&device_ccb->send_ctrl) & ~(1 << CTRL_BITPOS_G),
@ -225,26 +252,22 @@ static void ilo_ccb_close(struct pci_dev *pdev, struct ccb_data *data)
pci_free_consistent(pdev, data->dma_size, data->dma_va, data->dma_pa);
}
static int ilo_ccb_open(struct ilo_hwinfo *hw, struct ccb_data *data, int slot)
static int ilo_ccb_setup(struct ilo_hwinfo *hw, struct ccb_data *data, int slot)
{
char *dma_va, *dma_pa;
int pkt_id, pkt_sz, i, error;
struct ccb *driver_ccb, *ilo_ccb;
struct pci_dev *pdev;
driver_ccb = &data->driver_ccb;
ilo_ccb = &data->ilo_ccb;
pdev = hw->ilo_dev;
data->dma_size = 2 * fifo_sz(NR_QENTRY) +
2 * desc_mem_sz(NR_QENTRY) +
ILO_START_ALIGN + ILO_CACHE_SZ;
error = -ENOMEM;
data->dma_va = pci_alloc_consistent(pdev, data->dma_size,
data->dma_va = pci_alloc_consistent(hw->ilo_dev, data->dma_size,
&data->dma_pa);
if (!data->dma_va)
goto out;
return -ENOMEM;
dma_va = (char *)data->dma_va;
dma_pa = (char *)data->dma_pa;
@ -290,10 +313,18 @@ static int ilo_ccb_open(struct ilo_hwinfo *hw, struct ccb_data *data, int slot)
driver_ccb->ccb_u5.db_base = hw->db_vaddr + (slot << L2_DB_SIZE);
ilo_ccb->ccb_u5.db_base = NULL; /* hw ccb's doorbell is not used */
return 0;
}
static void ilo_ccb_open(struct ilo_hwinfo *hw, struct ccb_data *data, int slot)
{
int pkt_id, pkt_sz;
struct ccb *driver_ccb = &data->driver_ccb;
/* copy the ccb with physical addrs to device memory */
data->mapped_ccb = (struct ccb __iomem *)
(hw->ram_vaddr + (slot * ILOHW_CCB_SZ));
memcpy_toio(data->mapped_ccb, ilo_ccb, sizeof(struct ccb));
memcpy_toio(data->mapped_ccb, &data->ilo_ccb, sizeof(struct ccb));
/* put packets on the send and receive queues */
pkt_sz = 0;
@ -306,7 +337,14 @@ static int ilo_ccb_open(struct ilo_hwinfo *hw, struct ccb_data *data, int slot)
for (pkt_id = 0; pkt_id < NR_QENTRY; pkt_id++)
ilo_pkt_enqueue(hw, driver_ccb, RECVQ, pkt_id, pkt_sz);
/* the ccb is ready to use */
doorbell_clr(driver_ccb);
}
static int ilo_ccb_verify(struct ilo_hwinfo *hw, struct ccb_data *data)
{
int pkt_id, i;
struct ccb *driver_ccb = &data->driver_ccb;
/* make sure iLO is really handling requests */
for (i = MAX_WAIT; i > 0; i--) {
@ -315,20 +353,14 @@ static int ilo_ccb_open(struct ilo_hwinfo *hw, struct ccb_data *data, int slot)
udelay(WAIT_TIME);
}
if (i) {
ilo_pkt_enqueue(hw, driver_ccb, SENDQ, pkt_id, 0);
doorbell_set(driver_ccb);
} else {
dev_err(&pdev->dev, "Open could not dequeue a packet\n");
error = -EBUSY;
goto free;
if (i == 0) {
dev_err(&hw->ilo_dev->dev, "Open could not dequeue a packet\n");
return -EBUSY;
}
ilo_pkt_enqueue(hw, driver_ccb, SENDQ, pkt_id, 0);
doorbell_set(driver_ccb);
return 0;
free:
ilo_ccb_close(pdev, data);
out:
return error;
}
static inline int is_channel_reset(struct ccb *ccb)
@ -343,19 +375,45 @@ static inline void set_channel_reset(struct ccb *ccb)
FIFOBARTOHANDLE(ccb->ccb_u1.send_fifobar)->reset = 1;
}
static inline int get_device_outbound(struct ilo_hwinfo *hw)
{
return ioread32(&hw->mmio_vaddr[DB_OUT]);
}
static inline int is_db_reset(int db_out)
{
return db_out & (1 << DB_RESET);
}
static inline int is_device_reset(struct ilo_hwinfo *hw)
{
/* check for global reset condition */
return ioread32(&hw->mmio_vaddr[DB_OUT]) & (1 << DB_RESET);
return is_db_reset(get_device_outbound(hw));
}
static inline void clear_pending_db(struct ilo_hwinfo *hw, int clr)
{
iowrite32(clr, &hw->mmio_vaddr[DB_OUT]);
}
static inline void clear_device(struct ilo_hwinfo *hw)
{
/* clear the device (reset bits, pending channel entries) */
iowrite32(-1, &hw->mmio_vaddr[DB_OUT]);
clear_pending_db(hw, -1);
}
static void ilo_locked_reset(struct ilo_hwinfo *hw)
static inline void ilo_enable_interrupts(struct ilo_hwinfo *hw)
{
iowrite8(ioread8(&hw->mmio_vaddr[DB_IRQ]) | 1, &hw->mmio_vaddr[DB_IRQ]);
}
static inline void ilo_disable_interrupts(struct ilo_hwinfo *hw)
{
iowrite8(ioread8(&hw->mmio_vaddr[DB_IRQ]) & ~1,
&hw->mmio_vaddr[DB_IRQ]);
}
static void ilo_set_reset(struct ilo_hwinfo *hw)
{
int slot;
@ -368,40 +426,22 @@ static void ilo_locked_reset(struct ilo_hwinfo *hw)
continue;
set_channel_reset(&hw->ccb_alloc[slot]->driver_ccb);
}
clear_device(hw);
}
static void ilo_reset(struct ilo_hwinfo *hw)
{
spin_lock(&hw->alloc_lock);
/* reset might have been handled after lock was taken */
if (is_device_reset(hw))
ilo_locked_reset(hw);
spin_unlock(&hw->alloc_lock);
}
static ssize_t ilo_read(struct file *fp, char __user *buf,
size_t len, loff_t *off)
{
int err, found, cnt, pkt_id, pkt_len;
struct ccb_data *data;
struct ccb *driver_ccb;
struct ilo_hwinfo *hw;
struct ccb_data *data = fp->private_data;
struct ccb *driver_ccb = &data->driver_ccb;
struct ilo_hwinfo *hw = data->ilo_hw;
void *pkt;
data = fp->private_data;
driver_ccb = &data->driver_ccb;
hw = data->ilo_hw;
if (is_device_reset(hw) || is_channel_reset(driver_ccb)) {
if (is_channel_reset(driver_ccb)) {
/*
* If the device has been reset, applications
* need to close and reopen all ccbs.
*/
ilo_reset(hw);
return -ENODEV;
}
@ -442,23 +482,13 @@ static ssize_t ilo_write(struct file *fp, const char __user *buf,
size_t len, loff_t *off)
{
int err, pkt_id, pkt_len;
struct ccb_data *data;
struct ccb *driver_ccb;
struct ilo_hwinfo *hw;
struct ccb_data *data = fp->private_data;
struct ccb *driver_ccb = &data->driver_ccb;
struct ilo_hwinfo *hw = data->ilo_hw;
void *pkt;
data = fp->private_data;
driver_ccb = &data->driver_ccb;
hw = data->ilo_hw;
if (is_device_reset(hw) || is_channel_reset(driver_ccb)) {
/*
* If the device has been reset, applications
* need to close and reopen all ccbs.
*/
ilo_reset(hw);
if (is_channel_reset(driver_ccb))
return -ENODEV;
}
/* get a packet to send the user command */
if (!ilo_pkt_dequeue(hw, driver_ccb, SENDQ, &pkt_id, &pkt_len, &pkt))
@ -480,32 +510,48 @@ static ssize_t ilo_write(struct file *fp, const char __user *buf,
return err ? -EFAULT : len;
}
static unsigned int ilo_poll(struct file *fp, poll_table *wait)
{
struct ccb_data *data = fp->private_data;
struct ccb *driver_ccb = &data->driver_ccb;
poll_wait(fp, &data->ccb_waitq, wait);
if (is_channel_reset(driver_ccb))
return POLLERR;
else if (ilo_pkt_recv(data->ilo_hw, driver_ccb))
return POLLIN | POLLRDNORM;
return 0;
}
static int ilo_close(struct inode *ip, struct file *fp)
{
int slot;
struct ccb_data *data;
struct ilo_hwinfo *hw;
unsigned long flags;
slot = iminor(ip) % MAX_CCB;
hw = container_of(ip->i_cdev, struct ilo_hwinfo, cdev);
spin_lock(&hw->alloc_lock);
if (is_device_reset(hw))
ilo_locked_reset(hw);
spin_lock(&hw->open_lock);
if (hw->ccb_alloc[slot]->ccb_cnt == 1) {
data = fp->private_data;
spin_lock_irqsave(&hw->alloc_lock, flags);
hw->ccb_alloc[slot] = NULL;
spin_unlock_irqrestore(&hw->alloc_lock, flags);
ilo_ccb_close(hw->ilo_dev, data);
kfree(data);
hw->ccb_alloc[slot] = NULL;
} else
hw->ccb_alloc[slot]->ccb_cnt--;
spin_unlock(&hw->alloc_lock);
spin_unlock(&hw->open_lock);
return 0;
}
@ -515,6 +561,7 @@ static int ilo_open(struct inode *ip, struct file *fp)
int slot, error;
struct ccb_data *data;
struct ilo_hwinfo *hw;
unsigned long flags;
slot = iminor(ip) % MAX_CCB;
hw = container_of(ip->i_cdev, struct ilo_hwinfo, cdev);
@ -524,22 +571,42 @@ static int ilo_open(struct inode *ip, struct file *fp)
if (!data)
return -ENOMEM;
spin_lock(&hw->alloc_lock);
if (is_device_reset(hw))
ilo_locked_reset(hw);
spin_lock(&hw->open_lock);
/* each fd private_data holds sw/hw view of ccb */
if (hw->ccb_alloc[slot] == NULL) {
/* create a channel control block for this minor */
error = ilo_ccb_open(hw, data, slot);
if (!error) {
hw->ccb_alloc[slot] = data;
hw->ccb_alloc[slot]->ccb_cnt = 1;
hw->ccb_alloc[slot]->ccb_excl = fp->f_flags & O_EXCL;
hw->ccb_alloc[slot]->ilo_hw = hw;
} else
error = ilo_ccb_setup(hw, data, slot);
if (error) {
kfree(data);
goto out;
}
data->ccb_cnt = 1;
data->ccb_excl = fp->f_flags & O_EXCL;
data->ilo_hw = hw;
init_waitqueue_head(&data->ccb_waitq);
/* write the ccb to hw */
spin_lock_irqsave(&hw->alloc_lock, flags);
ilo_ccb_open(hw, data, slot);
hw->ccb_alloc[slot] = data;
spin_unlock_irqrestore(&hw->alloc_lock, flags);
/* make sure the channel is functional */
error = ilo_ccb_verify(hw, data);
if (error) {
spin_lock_irqsave(&hw->alloc_lock, flags);
hw->ccb_alloc[slot] = NULL;
spin_unlock_irqrestore(&hw->alloc_lock, flags);
ilo_ccb_close(hw->ilo_dev, data);
kfree(data);
goto out;
}
} else {
kfree(data);
if (fp->f_flags & O_EXCL || hw->ccb_alloc[slot]->ccb_excl) {
@ -554,7 +621,8 @@ static int ilo_open(struct inode *ip, struct file *fp)
error = 0;
}
}
spin_unlock(&hw->alloc_lock);
out:
spin_unlock(&hw->open_lock);
if (!error)
fp->private_data = hw->ccb_alloc[slot];
@ -566,10 +634,46 @@ static const struct file_operations ilo_fops = {
.owner = THIS_MODULE,
.read = ilo_read,
.write = ilo_write,
.poll = ilo_poll,
.open = ilo_open,
.release = ilo_close,
};
static irqreturn_t ilo_isr(int irq, void *data)
{
struct ilo_hwinfo *hw = data;
int pending, i;
spin_lock(&hw->alloc_lock);
/* check for ccbs which have data */
pending = get_device_outbound(hw);
if (!pending) {
spin_unlock(&hw->alloc_lock);
return IRQ_NONE;
}
if (is_db_reset(pending)) {
/* wake up all ccbs if the device was reset */
pending = -1;
ilo_set_reset(hw);
}
for (i = 0; i < MAX_CCB; i++) {
if (!hw->ccb_alloc[i])
continue;
if (pending & (1 << i))
wake_up_interruptible(&hw->ccb_alloc[i]->ccb_waitq);
}
/* clear the device of the channels that have been handled */
clear_pending_db(hw, pending);
spin_unlock(&hw->alloc_lock);
return IRQ_HANDLED;
}
static void ilo_unmap_device(struct pci_dev *pdev, struct ilo_hwinfo *hw)
{
pci_iounmap(pdev, hw->db_vaddr);
@ -623,6 +727,8 @@ static void ilo_remove(struct pci_dev *pdev)
device_destroy(ilo_class, MKDEV(ilo_major, i));
cdev_del(&ilo_hw->cdev);
ilo_disable_interrupts(ilo_hw);
free_irq(pdev->irq, ilo_hw);
ilo_unmap_device(pdev, ilo_hw);
pci_release_regions(pdev);
pci_disable_device(pdev);
@ -658,6 +764,7 @@ static int __devinit ilo_probe(struct pci_dev *pdev,
ilo_hw->ilo_dev = pdev;
spin_lock_init(&ilo_hw->alloc_lock);
spin_lock_init(&ilo_hw->fifo_lock);
spin_lock_init(&ilo_hw->open_lock);
error = pci_enable_device(pdev);
if (error)
@ -676,13 +783,19 @@ static int __devinit ilo_probe(struct pci_dev *pdev,
pci_set_drvdata(pdev, ilo_hw);
clear_device(ilo_hw);
error = request_irq(pdev->irq, ilo_isr, IRQF_SHARED, "hpilo", ilo_hw);
if (error)
goto unmap;
ilo_enable_interrupts(ilo_hw);
cdev_init(&ilo_hw->cdev, &ilo_fops);
ilo_hw->cdev.owner = THIS_MODULE;
start = devnum * MAX_CCB;
error = cdev_add(&ilo_hw->cdev, MKDEV(ilo_major, start), MAX_CCB);
if (error) {
dev_err(&pdev->dev, "Could not add cdev\n");
goto unmap;
goto remove_isr;
}
for (minor = 0 ; minor < MAX_CCB; minor++) {
@ -695,6 +808,9 @@ static int __devinit ilo_probe(struct pci_dev *pdev,
}
return 0;
remove_isr:
ilo_disable_interrupts(ilo_hw);
free_irq(pdev->irq, ilo_hw);
unmap:
ilo_unmap_device(pdev, ilo_hw);
free_regions:
@ -759,7 +875,7 @@ static void __exit ilo_exit(void)
class_destroy(ilo_class);
}
MODULE_VERSION("1.1");
MODULE_VERSION("1.2");
MODULE_ALIAS(ILO_NAME);
MODULE_DESCRIPTION(ILO_NAME);
MODULE_AUTHOR("David Altobelli <david.altobelli@hp.com>");

8
drivers/misc/hpilo.h
View File

@ -46,11 +46,14 @@ struct ilo_hwinfo {
spinlock_t alloc_lock;
spinlock_t fifo_lock;
spinlock_t open_lock;
struct cdev cdev;
};
/* offset from mmio_vaddr */
/* offset from mmio_vaddr for enabling doorbell interrupts */
#define DB_IRQ 0xB2
/* offset from mmio_vaddr for outbound communications */
#define DB_OUT 0xD4
/* DB_OUT reset bit */
#define DB_RESET 26
@ -131,6 +134,9 @@ struct ccb_data {
/* pointer to hardware device info */
struct ilo_hwinfo *ilo_hw;
/* queue for this ccb to wait for recv data */
wait_queue_head_t ccb_waitq;
/* usage count, to allow for shared ccb's */
int ccb_cnt;

2
drivers/mmc/core/mmc.c
View File

@ -276,7 +276,7 @@ static struct attribute_group mmc_std_attr_group = {
.attrs = mmc_std_attrs,
};
static struct attribute_group *mmc_attr_groups[] = {
static const struct attribute_group *mmc_attr_groups[] = {
&mmc_std_attr_group,
NULL,
};

2
drivers/mmc/core/sd.c
View File

@ -314,7 +314,7 @@ static struct attribute_group sd_std_attr_group = {
.attrs = sd_std_attrs,
};
static struct attribute_group *sd_attr_groups[] = {
static const struct attribute_group *sd_attr_groups[] = {
&sd_std_attr_group,
NULL,
};

2
drivers/mtd/mtdcore.c
View File

@ -217,7 +217,7 @@ struct attribute_group mtd_group = {
.attrs = mtd_attrs,
};
struct attribute_group *mtd_groups[] = {
const struct attribute_group *mtd_groups[] = {
&mtd_group,
NULL,
};

6
drivers/net/wireless/iwmc3200wifi/Kconfig
View File

@ -24,8 +24,8 @@ config IWM_DEBUG
To see the list of debug modules and levels, see iwm/debug.h
For example, if you want the full MLME debug output:
echo 0xff > /debug/iwm/phyN/debug/mlme
echo 0xff > /sys/kernel/debug/iwm/phyN/debug/mlme
Or, if you want the full debug, for all modules:
echo 0xff > /debug/iwm/phyN/debug/level
echo 0xff > /debug/iwm/phyN/debug/modules
echo 0xff > /sys/kernel/debug/iwm/phyN/debug/level
echo 0xff > /sys/kernel/debug/iwm/phyN/debug/modules

2
drivers/s390/cio/css.c
View File

@ -266,7 +266,7 @@ static struct attribute_group subch_attr_group = {
.attrs = subch_attrs,
};
static struct attribute_group *default_subch_attr_groups[] = {
static const struct attribute_group *default_subch_attr_groups[] = {
&subch_attr_group,
NULL,
};

2
drivers/s390/cio/device.c
View File

@ -656,7 +656,7 @@ static struct attribute_group ccwdev_attr_group = {
.attrs = ccwdev_attrs,
};
static struct attribute_group *ccwdev_attr_groups[] = {
static const struct attribute_group *ccwdev_attr_groups[] = {
&ccwdev_attr_group,
NULL,
};

2
drivers/s390/net/netiucv.c
View File

@ -2159,7 +2159,7 @@ static struct attribute_group netiucv_drv_attr_group = {
.attrs = netiucv_drv_attrs,
};
static struct attribute_group *netiucv_drv_attr_groups[] = {
static const struct attribute_group *netiucv_drv_attr_groups[] = {
&netiucv_drv_attr_group,
NULL,
};

2
drivers/scsi/scsi_priv.h
View File

@ -132,7 +132,7 @@ extern struct scsi_transport_template blank_transport_template;
extern void __scsi_remove_device(struct scsi_device *);
extern struct bus_type scsi_bus_type;
extern struct attribute_group *scsi_sysfs_shost_attr_groups[];
extern const struct attribute_group *scsi_sysfs_shost_attr_groups[];
/* scsi_netlink.c */
#ifdef CONFIG_SCSI_NETLINK

4
drivers/scsi/scsi_sysfs.c
View File

@ -275,7 +275,7 @@ struct attribute_group scsi_shost_attr_group = {
.attrs = scsi_sysfs_shost_attrs,
};
struct attribute_group *scsi_sysfs_shost_attr_groups[] = {
const struct attribute_group *scsi_sysfs_shost_attr_groups[] = {
&scsi_shost_attr_group,
NULL
};
@ -745,7 +745,7 @@ static struct attribute_group scsi_sdev_attr_group = {
.attrs = scsi_sdev_attrs,
};
static struct attribute_group *scsi_sdev_attr_groups[] = {
static const struct attribute_group *scsi_sdev_attr_groups[] = {
&scsi_sdev_attr_group,
NULL
};

15
drivers/uio/Kconfig
View File

@ -1,7 +1,6 @@
menuconfig UIO
tristate "Userspace I/O drivers"
depends on !S390
default n
help
Enable this to allow the userspace driver core code to be
built. This code allows userspace programs easy access to
@ -16,7 +15,6 @@ if UIO
config UIO_CIF
tristate "generic Hilscher CIF Card driver"
depends on PCI
default n
help
Driver for Hilscher CIF DeviceNet and Profibus cards. This
driver requires a userspace component that handles all of the
@ -48,7 +46,6 @@ config UIO_PDRV_GENIRQ
config UIO_SMX
tristate "SMX cryptengine UIO interface"
default n
help
Userspace IO interface to the Cryptography engine found on the
Nias Digital SMX boards. These will be available from Q4 2008
@ -61,7 +58,6 @@ config UIO_SMX
config UIO_AEC
tristate "AEC video timestamp device"
depends on PCI
default n
help
UIO driver for the Adrienne Electronics Corporation PCI time
@ -78,7 +74,6 @@ config UIO_AEC
config UIO_SERCOS3
tristate "Automata Sercos III PCI card driver"
default n
help
Userspace I/O interface for the Sercos III PCI card from
Automata GmbH. The userspace part of this driver will be
@ -89,4 +84,14 @@ config UIO_SERCOS3
If you compile this as a module, it will be called uio_sercos3.
config UIO_PCI_GENERIC
tristate "Generic driver for PCI 2.3 and PCI Express cards"
depends on PCI
default n
help
Generic driver that you can bind, dynamically, to any
PCI 2.3 compliant and PCI Express card. It is useful,
primarily, for virtualization scenarios.
If you compile this as a module, it will be called uio_pci_generic.
endif

1
drivers/uio/Makefile
View File

@ -5,3 +5,4 @@ obj-$(CONFIG_UIO_PDRV_GENIRQ) += uio_pdrv_genirq.o
obj-$(CONFIG_UIO_SMX) += uio_smx.o
obj-$(CONFIG_UIO_AEC) += uio_aec.o
obj-$(CONFIG_UIO_SERCOS3) += uio_sercos3.o
obj-$(CONFIG_UIO_PCI_GENERIC) += uio_pci_generic.o

207
drivers/uio/uio_pci_generic.c Normal file
View File

@ -0,0 +1,207 @@
/* uio_pci_generic - generic UIO driver for PCI 2.3 devices
*
* Copyright (C) 2009 Red Hat, Inc.
* Author: Michael S. Tsirkin <mst@redhat.com>
*
* This work is licensed under the terms of the GNU GPL, version 2.
*
* Since the driver does not declare any device ids, you must allocate
* id and bind the device to the driver yourself. For example:
*
* # echo "8086 10f5" > /sys/bus/pci/drivers/uio_pci_generic/new_id
* # echo -n 0000:00:19.0 > /sys/bus/pci/drivers/e1000e/unbind
* # echo -n 0000:00:19.0 > /sys/bus/pci/drivers/uio_pci_generic/bind
* # ls -l /sys/bus/pci/devices/0000:00:19.0/driver
* .../0000:00:19.0/driver -> ../../../bus/pci/drivers/uio_pci_generic
*
* Driver won't bind to devices which do not support the Interrupt Disable Bit
* in the command register. All devices compliant to PCI 2.3 (circa 2002) and
* all compliant PCI Express devices should support this bit.
*/
#include <linux/device.h>
#include <linux/module.h>
#include <linux/pci.h>
#include <linux/uio_driver.h>
#include <linux/spinlock.h>
#define DRIVER_VERSION "0.01.0"
#define DRIVER_AUTHOR "Michael S. Tsirkin <mst@redhat.com>"
#define DRIVER_DESC "Generic UIO driver for PCI 2.3 devices"
struct uio_pci_generic_dev {
struct uio_info info;
struct pci_dev *pdev;
spinlock_t lock; /* guards command register accesses */
};
static inline struct uio_pci_generic_dev *
to_uio_pci_generic_dev(struct uio_info *info)
{
return container_of(info, struct uio_pci_generic_dev, info);
}
/* Interrupt handler. Read/modify/write the command register to disable
* the interrupt. */
static irqreturn_t irqhandler(int irq, struct uio_info *info)
{
struct uio_pci_generic_dev *gdev = to_uio_pci_generic_dev(info);
struct pci_dev *pdev = gdev->pdev;
irqreturn_t ret = IRQ_NONE;
u32 cmd_status_dword;
u16 origcmd, newcmd, status;
/* We do a single dword read to retrieve both command and status.
* Document assumptions that make this possible. */
BUILD_BUG_ON(PCI_COMMAND % 4);
BUILD_BUG_ON(PCI_COMMAND + 2 != PCI_STATUS);
spin_lock_irq(&gdev->lock);
pci_block_user_cfg_access(pdev);
/* Read both command and status registers in a single 32-bit operation.
* Note: we could cache the value for command and move the status read
* out of the lock if there was a way to get notified of user changes
* to command register through sysfs. Should be good for shared irqs. */
pci_read_config_dword(pdev, PCI_COMMAND, &cmd_status_dword);
origcmd = cmd_status_dword;
status = cmd_status_dword >> 16;
/* Check interrupt status register to see whether our device
* triggered the interrupt. */
if (!(status & PCI_STATUS_INTERRUPT))
goto done;
/* We triggered the interrupt, disable it. */
newcmd = origcmd | PCI_COMMAND_INTX_DISABLE;
if (newcmd != origcmd)
pci_write_config_word(pdev, PCI_COMMAND, newcmd);
/* UIO core will signal the user process. */
ret = IRQ_HANDLED;
done:
pci_unblock_user_cfg_access(pdev);
spin_unlock_irq(&gdev->lock);
return ret;
}
/* Verify that the device supports Interrupt Disable bit in command register,
* per PCI 2.3, by flipping this bit and reading it back: this bit was readonly
* in PCI 2.2. */
static int __devinit verify_pci_2_3(struct pci_dev *pdev)
{
u16 orig, new;
int err = 0;
pci_block_user_cfg_access(pdev);
pci_read_config_word(pdev, PCI_COMMAND, &orig);
pci_write_config_word(pdev, PCI_COMMAND,
orig ^ PCI_COMMAND_INTX_DISABLE);
pci_read_config_word(pdev, PCI_COMMAND, &new);
/* There's no way to protect against
* hardware bugs or detect them reliably, but as long as we know
* what the value should be, let's go ahead and check it. */
if ((new ^ orig) & ~PCI_COMMAND_INTX_DISABLE) {
err = -EBUSY;
dev_err(&pdev->dev, "Command changed from 0x%x to 0x%x: "
"driver or HW bug?\n", orig, new);
goto err;
}
if (!((new ^ orig) & PCI_COMMAND_INTX_DISABLE)) {
dev_warn(&pdev->dev, "Device does not support "
"disabling interrupts: unable to bind.\n");
err = -ENODEV;
goto err;
}
/* Now restore the original value. */
pci_write_config_word(pdev, PCI_COMMAND, orig);
err:
pci_unblock_user_cfg_access(pdev);
return err;
}
static int __devinit probe(struct pci_dev *pdev,
const struct pci_device_id *id)
{
struct uio_pci_generic_dev *gdev;
int err;
if (!pdev->irq) {
dev_warn(&pdev->dev, "No IRQ assigned to device: "
"no support for interrupts?\n");
return -ENODEV;
}
err = pci_enable_device(pdev);
if (err) {
dev_err(&pdev->dev, "%s: pci_enable_device failed: %d\n",
__func__, err);
return err;
}
err = verify_pci_2_3(pdev);
if (err)
goto err_verify;
gdev = kzalloc(sizeof(struct uio_pci_generic_dev), GFP_KERNEL);
if (!gdev) {
err = -ENOMEM;
goto err_alloc;
}
gdev->info.name = "uio_pci_generic";
gdev->info.version = DRIVER_VERSION;
gdev->info.irq = pdev->irq;
gdev->info.irq_flags = IRQF_SHARED;
gdev->info.handler = irqhandler;
gdev->pdev = pdev;
spin_lock_init(&gdev->lock);
if (uio_register_device(&pdev->dev, &gdev->info))
goto err_register;
pci_set_drvdata(pdev, gdev);
return 0;
err_register:
kfree(gdev);
err_alloc:
err_verify:
pci_disable_device(pdev);
return err;
}
static void remove(struct pci_dev *pdev)
{
struct uio_pci_generic_dev *gdev = pci_get_drvdata(pdev);
uio_unregister_device(&gdev->info);
pci_disable_device(pdev);
kfree(gdev);
}
static struct pci_driver driver = {
.name = "uio_pci_generic",
.id_table = NULL, /* only dynamic id's */
.probe = probe,
.remove = remove,
};
static int __init init(void)
{
pr_info(DRIVER_DESC " version: " DRIVER_VERSION "\n");
return pci_register_driver(&driver);
}
static void __exit cleanup(void)
{
pci_unregister_driver(&driver);
}
module_init(init);
module_exit(cleanup);
MODULE_VERSION(DRIVER_VERSION);
MODULE_LICENSE("GPL v2");
MODULE_AUTHOR(DRIVER_AUTHOR);
MODULE_DESCRIPTION(DRIVER_DESC);

2
drivers/usb/core/endpoint.c
View File

@ -154,7 +154,7 @@ static struct attribute *ep_dev_attrs[] = {
static struct attribute_group ep_dev_attr_grp = {
.attrs = ep_dev_attrs,
};
static struct attribute_group *ep_dev_groups[] = {
static const struct attribute_group *ep_dev_groups[] = {
&ep_dev_attr_grp,
NULL
};

4
drivers/usb/core/sysfs.c
View File

@ -573,7 +573,7 @@ static struct attribute_group dev_string_attr_grp = {
.is_visible = dev_string_attrs_are_visible,
};
struct attribute_group *usb_device_groups[] = {
const struct attribute_group *usb_device_groups[] = {
&dev_attr_grp,
&dev_string_attr_grp,
NULL
@ -799,7 +799,7 @@ static struct attribute_group intf_assoc_attr_grp = {
.is_visible = intf_assoc_attrs_are_visible,
};
struct attribute_group *usb_interface_groups[] = {
const struct attribute_group *usb_interface_groups[] = {
&intf_attr_grp,
&intf_assoc_attr_grp,
NULL

4
drivers/usb/core/usb.h
View File

@ -152,8 +152,8 @@ static inline int is_active(const struct usb_interface *f)
extern const char *usbcore_name;
/* sysfs stuff */
extern struct attribute_group *usb_device_groups[];
extern struct attribute_group *usb_interface_groups[];
extern const struct attribute_group *usb_device_groups[];
extern const struct attribute_group *usb_interface_groups[];
/* usbfs stuff */
extern struct mutex usbfs_mutex;

2
drivers/usb/host/uhci-hcd.c
View File

@ -67,7 +67,7 @@ MODULE_PARM_DESC(ignore_oc, "ignore hardware overcurrent indications");
* debug = 0, no debugging messages
* debug = 1, dump failed URBs except for stalls
* debug = 2, dump all failed URBs (including stalls)
* show all queues in /debug/uhci/[pci_addr]
* show all queues in /sys/kernel/debug/uhci/[pci_addr]
* debug = 3, show all TDs in URBs when dumping
*/
#ifdef DEBUG

2
drivers/uwb/lc-dev.c
View File

@ -255,7 +255,7 @@ static struct attribute_group dev_attr_group = {
.attrs = dev_attrs,
};
static struct attribute_group *groups[] = {
static const struct attribute_group *groups[] = {
&dev_attr_group,
NULL,
};

2
fs/partitions/check.c
View File

@ -312,7 +312,7 @@ static struct attribute_group part_attr_group = {
.attrs = part_attrs,
};
static struct attribute_group *part_attr_groups[] = {
static const struct attribute_group *part_attr_groups[] = {
&part_attr_group,
#ifdef CONFIG_BLK_DEV_IO_TRACE
&blk_trace_attr_group,

2
include/linux/attribute_container.h
View File

@ -17,7 +17,7 @@ struct attribute_container {
struct list_head node;
struct klist containers;
struct class *class;
struct attribute_group *grp;
const struct attribute_group *grp;
struct device_attribute **attrs;
int (*match)(struct attribute_container *, struct device *);
#define ATTRIBUTE_CONTAINER_NO_CLASSDEVS 0x01

45
include/linux/device.h
View File

@ -2,7 +2,8 @@
* device.h - generic, centralized driver model
*
* Copyright (c) 2001-2003 Patrick Mochel <mochel@osdl.org>
* Copyright (c) 2004-2007 Greg Kroah-Hartman <gregkh@suse.de>
* Copyright (c) 2004-2009 Greg Kroah-Hartman <gregkh@suse.de>
* Copyright (c) 2008-2009 Novell Inc.
*
* This file is released under the GPLv2
*
@ -130,7 +131,7 @@ struct device_driver {
void (*shutdown) (struct device *dev);
int (*suspend) (struct device *dev, pm_message_t state);
int (*resume) (struct device *dev);
struct attribute_group **groups;
const struct attribute_group **groups;
const struct dev_pm_ops *pm;
@ -224,6 +225,14 @@ extern void class_unregister(struct class *class);
__class_register(class, &__key); \
})
struct class_compat;
struct class_compat *class_compat_register(const char *name);
void class_compat_unregister(struct class_compat *cls);
int class_compat_create_link(struct class_compat *cls, struct device *dev,
struct device *device_link);
void class_compat_remove_link(struct class_compat *cls, struct device *dev,
struct device *device_link);
extern void class_dev_iter_init(struct class_dev_iter *iter,
struct class *class,
struct device *start,
@ -287,7 +296,7 @@ extern void class_destroy(struct class *cls);
*/
struct device_type {
const char *name;
struct attribute_group **groups;
const struct attribute_group **groups;
int (*uevent)(struct device *dev, struct kobj_uevent_env *env);
char *(*nodename)(struct device *dev);
void (*release)(struct device *dev);
@ -381,7 +390,6 @@ struct device {
struct bus_type *bus; /* type of bus device is on */
struct device_driver *driver; /* which driver has allocated this
device */
void *driver_data; /* data private to the driver */
void *platform_data; /* Platform specific data, device
core doesn't touch it */
struct dev_pm_info power;
@ -412,7 +420,7 @@ struct device {
struct klist_node knode_class;
struct class *class;
struct attribute_group **groups; /* optional groups */
const struct attribute_group **groups; /* optional groups */
void (*release)(struct device *dev);
};
@ -447,16 +455,6 @@ static inline void set_dev_node(struct device *dev, int node)
}
#endif
static inline void *dev_get_drvdata(const struct device *dev)
{
return dev->driver_data;
}
static inline void dev_set_drvdata(struct device *dev, void *data)
{
dev->driver_data = data;
}
static inline unsigned int dev_get_uevent_suppress(const struct device *dev)
{
return dev->kobj.uevent_suppress;
@ -490,6 +488,8 @@ extern int device_rename(struct device *dev, char *new_name);
extern int device_move(struct device *dev, struct device *new_parent,
enum dpm_order dpm_order);
extern const char *device_get_nodename(struct device *dev, const char **tmp);
extern void *dev_get_drvdata(const struct device *dev);
extern void dev_set_drvdata(struct device *dev, void *data);
/*
* Root device objects for grouping under /sys/devices
@ -502,6 +502,11 @@ static inline struct device *root_device_register(const char *name)
}
extern void root_device_unregister(struct device *root);
static inline void *dev_get_platdata(const struct device *dev)
{
return dev->platform_data;
}
/*
* Manual binding of a device to driver. See drivers/base/bus.c
* for information on use.
@ -547,6 +552,16 @@ extern void put_device(struct device *dev);
extern void wait_for_device_probe(void);
#ifdef CONFIG_DEVTMPFS
extern int devtmpfs_create_node(struct device *dev);
extern int devtmpfs_delete_node(struct device *dev);
extern int devtmpfs_mount(const char *mountpoint);
#else
static inline int devtmpfs_create_node(struct device *dev) { return 0; }
static inline int devtmpfs_delete_node(struct device *dev) { return 0; }
static inline int devtmpfs_mount(const char *mountpoint) { return 0; }
#endif
/* drivers/base/power/shutdown.c */
extern void device_shutdown(void);

2
include/linux/netdevice.h
View File

@ -895,7 +895,7 @@ struct net_device
/* class/net/name entry */
struct device dev;
/* space for optional statistics and wireless sysfs groups */
struct attribute_group *sysfs_groups[3];
const struct attribute_group *sysfs_groups[3];
/* rtnetlink link ops */
const struct rtnl_link_ops *rtnl_link_ops;

1
include/linux/pci_regs.h
View File

@ -42,6 +42,7 @@
#define PCI_COMMAND_INTX_DISABLE 0x400 /* INTx Emulation Disable */
#define PCI_STATUS 0x06 /* 16 bits */
#define PCI_STATUS_INTERRUPT 0x08 /* Interrupt status */
#define PCI_STATUS_CAP_LIST 0x10 /* Support Capability List */
#define PCI_STATUS_66MHZ 0x20 /* Support 66 Mhz PCI 2.1 bus */
#define PCI_STATUS_UDF 0x40 /* Support User Definable Features [obsolete] */

3
include/linux/shmem_fs.h
View File

@ -38,6 +38,9 @@ static inline struct shmem_inode_info *SHMEM_I(struct inode *inode)
return container_of(inode, struct shmem_inode_info, vfs_inode);
}
extern int init_tmpfs(void);
extern int shmem_fill_super(struct super_block *sb, void *data, int silent);
#ifdef CONFIG_TMPFS_POSIX_ACL
int shmem_check_acl(struct inode *, int);
int shmem_acl_init(struct inode *, struct inode *);

2
include/linux/transport_class.h
View File

@ -55,7 +55,7 @@ struct anon_transport_class cls = { \
struct transport_container {
struct attribute_container ac;
struct attribute_group *statistics;
const struct attribute_group *statistics;
};
#define attribute_container_to_transport_container(x) \

2
init/do_mounts.c
View File

@ -415,7 +415,7 @@ void __init prepare_namespace(void)
mount_root();
out:
devtmpfs_mount("dev");
sys_mount(".", "/", NULL, MS_MOVE, NULL);
sys_chroot(".");
}

2
init/main.c
View File

@ -68,6 +68,7 @@
#include <linux/async.h>
#include <linux/kmemcheck.h>
#include <linux/kmemtrace.h>
#include <linux/shmem_fs.h>
#include <trace/boot.h>
#include <asm/io.h>
@ -785,6 +786,7 @@ static void __init do_basic_setup(void)
init_workqueues();
cpuset_init_smp();
usermodehelper_init();
init_tmpfs();
driver_init();
init_irq_proc();
do_ctors();

1
kernel/Makefile
View File

@ -90,7 +90,6 @@ obj-$(CONFIG_TASKSTATS) += taskstats.o tsacct.o
obj-$(CONFIG_MARKERS) += marker.o
obj-$(CONFIG_TRACEPOINTS) += tracepoint.o
obj-$(CONFIG_LATENCYTOP) += latencytop.o
obj-$(CONFIG_HAVE_GENERIC_DMA_COHERENT) += dma-coherent.o
obj-$(CONFIG_FUNCTION_TRACER) += trace/
obj-$(CONFIG_TRACING) += trace/
obj-$(CONFIG_X86_DS) += trace/

9
mm/shmem.c
View File

@ -2298,8 +2298,7 @@ static void shmem_put_super(struct super_block *sb)
sb->s_fs_info = NULL;
}
static int shmem_fill_super(struct super_block *sb,
void *data, int silent)
int shmem_fill_super(struct super_block *sb, void *data, int silent)
{
struct inode *inode;
struct dentry *root;
@ -2519,7 +2518,7 @@ static struct file_system_type tmpfs_fs_type = {
.kill_sb = kill_litter_super,
};
static int __init init_tmpfs(void)
int __init init_tmpfs(void)
{
int error;
@ -2576,7 +2575,7 @@ static struct file_system_type tmpfs_fs_type = {
.kill_sb = kill_litter_super,
};
static int __init init_tmpfs(void)
int __init init_tmpfs(void)
{
BUG_ON(register_filesystem(&tmpfs_fs_type) != 0);
@ -2687,5 +2686,3 @@ int shmem_zero_setup(struct vm_area_struct *vma)
vma->vm_ops = &shmem_vm_ops;
return 0;
}
module_init(init_tmpfs)

4
net/bluetooth/hci_sysfs.c
View File

@ -68,7 +68,7 @@ static struct attribute_group bt_link_group = {
.attrs = bt_link_attrs,
};
static struct attribute_group *bt_link_groups[] = {
static const struct attribute_group *bt_link_groups[] = {
&bt_link_group,
NULL
};
@ -392,7 +392,7 @@ static struct attribute_group bt_host_group = {
.attrs = bt_host_attrs,
};
static struct attribute_group *bt_host_groups[] = {
static const struct attribute_group *bt_host_groups[] = {
&bt_host_group,
NULL
};

2
net/core/net-sysfs.c
View File

@ -493,7 +493,7 @@ void netdev_unregister_kobject(struct net_device * net)
int netdev_register_kobject(struct net_device *net)
{
struct device *dev = &(net->dev);
struct attribute_group **groups = net->sysfs_groups;
const struct attribute_group **groups = net->sysfs_groups;
dev->class = &net_class;
dev->platform_data = net;

2
samples/trace_events/trace-events-sample.h
View File

@ -1,6 +1,6 @@
/*
* If TRACE_SYSTEM is defined, that will be the directory created
* in the ftrace directory under /debugfs/tracing/events/<system>
* in the ftrace directory under /sys/kernel/debug/tracing/events/<system>
*
* The define_trace.h below will also look for a file name of
* TRACE_SYSTEM.h where TRACE_SYSTEM is what is defined here.