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USB: use MII hooks only if CONFIG_MII is enabled 

Fix mcs7830 patch

The recent mcs7830 update to make the MII support sharable goofed various
pre-existing configurations in two ways:

  - it made the usbnet infrastructure reference MII symbols even
    when they're not needed in the kernel being built

  - it didn't enable MII along with the mcs7830 minidriver

This patch fixes these two problems.

However, there does seem to be a Kconfig reverse dependency bug in that MII
gets wrongly enabled in some cases (like USBNET=y and USBNET_MII=n); I think
I've noticed that same problem in other situations too.  So the result can
mean kernels being bloated by stuff that's needlessly enabled ... better
than wrongly being disabled, but contributing to bloat.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
David Brownell 2006-11-02 12:29:12 -08:00 committed by Greg Kroah-Hartman
parent 9b823b43ff
commit 18ee91fa98
2 changed files with 39 additions and 27 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
drivers/usb/net/Kconfig
View File

@ -92,8 +92,13 @@ config USB_RTL8150
To compile this driver as a module, choose M here: the
module will be called rtl8150.
config USB_USBNET_MII
tristate
default n
config USB_USBNET
tristate "Multi-purpose USB Networking Framework"
select MII if USBNET_MII != n
---help---
This driver supports several kinds of network links over USB,
with "minidrivers" built around a common network driver core
@ -129,7 +134,7 @@ config USB_NET_AX8817X
tristate "ASIX AX88xxx Based USB 2.0 Ethernet Adapters"
depends on USB_USBNET && NET_ETHERNET
select CRC32
select MII
select USB_USBNET_MII
default y
help
This option adds support for ASIX AX88xxx based USB 2.0
@ -210,6 +215,7 @@ config USB_NET_PLUSB
config USB_NET_MCS7830
tristate "MosChip MCS7830 based Ethernet adapters"
depends on USB_USBNET
select USB_USBNET_MII
help
Choose this option if you're using a 10/100 Ethernet USB2
adapter based on the MosChip 7830 controller. This includes

58
drivers/usb/net/usbnet.c
View File

@ -669,6 +669,9 @@ done:
* they'll probably want to use this base set.
*/
#if defined(CONFIG_MII) || defined(CONFIG_MII_MODULE)
#define HAVE_MII
int usbnet_get_settings (struct net_device *net, struct ethtool_cmd *cmd)
{
struct usbnet *dev = netdev_priv(net);
@ -699,20 +702,6 @@ int usbnet_set_settings (struct net_device *net, struct ethtool_cmd *cmd)
}
EXPORT_SYMBOL_GPL(usbnet_set_settings);
void usbnet_get_drvinfo (struct net_device *net, struct ethtool_drvinfo *info)
{
struct usbnet *dev = netdev_priv(net);
/* REVISIT don't always return "usbnet" */
strncpy (info->driver, driver_name, sizeof info->driver);
strncpy (info->version, DRIVER_VERSION, sizeof info->version);
strncpy (info->fw_version, dev->driver_info->description,
sizeof info->fw_version);
usb_make_path (dev->udev, info->bus_info, sizeof info->bus_info);
}
EXPORT_SYMBOL_GPL(usbnet_get_drvinfo);
u32 usbnet_get_link (struct net_device *net)
{
struct usbnet *dev = netdev_priv(net);
@ -730,6 +719,32 @@ u32 usbnet_get_link (struct net_device *net)
}
EXPORT_SYMBOL_GPL(usbnet_get_link);
int usbnet_nway_reset(struct net_device *net)
{
struct usbnet *dev = netdev_priv(net);
if (!dev->mii.mdio_write)
return -EOPNOTSUPP;
return mii_nway_restart(&dev->mii);
}
EXPORT_SYMBOL_GPL(usbnet_nway_reset);
#endif /* HAVE_MII */
void usbnet_get_drvinfo (struct net_device *net, struct ethtool_drvinfo *info)
{
struct usbnet *dev = netdev_priv(net);
/* REVISIT don't always return "usbnet" */
strncpy (info->driver, driver_name, sizeof info->driver);
strncpy (info->version, DRIVER_VERSION, sizeof info->version);
strncpy (info->fw_version, dev->driver_info->description,
sizeof info->fw_version);
usb_make_path (dev->udev, info->bus_info, sizeof info->bus_info);
}
EXPORT_SYMBOL_GPL(usbnet_get_drvinfo);
u32 usbnet_get_msglevel (struct net_device *net)
{
struct usbnet *dev = netdev_priv(net);
@ -746,24 +761,15 @@ void usbnet_set_msglevel (struct net_device *net, u32 level)
}
EXPORT_SYMBOL_GPL(usbnet_set_msglevel);
int usbnet_nway_reset(struct net_device *net)
{
struct usbnet *dev = netdev_priv(net);
if (!dev->mii.mdio_write)
return -EOPNOTSUPP;
return mii_nway_restart(&dev->mii);
}
EXPORT_SYMBOL_GPL(usbnet_nway_reset);
/* drivers may override default ethtool_ops in their bind() routine */
static struct ethtool_ops usbnet_ethtool_ops = {
#ifdef HAVE_MII
.get_settings = usbnet_get_settings,
.set_settings = usbnet_set_settings,
.get_drvinfo = usbnet_get_drvinfo,
.get_link = usbnet_get_link,
.nway_reset = usbnet_nway_reset,
#endif
.get_drvinfo = usbnet_get_drvinfo,
.get_msglevel = usbnet_get_msglevel,
.set_msglevel = usbnet_set_msglevel,
};