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MIPS: Lasat: Convert to proc_fops / seq_file 

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Cc: akpm@linux-foundation.org
Cc: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/725/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Alexey Dobriyan 2009-11-27 09:55:03 +03:00 committed by Ralf Baechle
parent 137f6f3e28
commit c0b4abdd52
1 changed files with 68 additions and 45 deletions
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113
arch/mips/lasat/picvue_proc.c
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@ -4,12 +4,14 @@
* Brian Murphy <brian.murphy@eicon.com>
*
*/
#include <linux/bug.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/errno.h>
#include <linux/proc_fs.h>
#include <linux/seq_file.h>
#include <linux/interrupt.h>
#include <linux/timer.h>
@ -38,12 +40,9 @@ static void pvc_display(unsigned long data)
static DECLARE_TASKLET(pvc_display_tasklet, &pvc_display, 0);
static int pvc_proc_read_line(char *page, char **start,
off_t off, int count,
int *eof, void *data)
static int pvc_line_proc_show(struct seq_file *m, void *v)
{
char *origpage = page;
int lineno = *(int *)data;
int lineno = *(int *)m->private;
if (lineno < 0 || lineno > PVC_NLINES) {
printk(KERN_WARNING "proc_read_line: invalid lineno %d\n", lineno);
@ -51,45 +50,66 @@ static int pvc_proc_read_line(char *page, char **start,
}
mutex_lock(&pvc_mutex);
page += sprintf(page, "%s\n", pvc_lines[lineno]);
seq_printf(m, "%s\n", pvc_lines[lineno]);
mutex_unlock(&pvc_mutex);
return page - origpage;
return 0;
}
static int pvc_proc_write_line(struct file *file, const char *buffer,
unsigned long count, void *data)
static int pvc_line_proc_open(struct inode *inode, struct file *file)
{
int origcount = count;
int lineno = *(int *)data;
return single_open(file, pvc_line_proc_show, PDE(inode)->data);
}
if (lineno < 0 || lineno > PVC_NLINES) {
printk(KERN_WARNING "proc_write_line: invalid lineno %d\n",
lineno);
return origcount;
}
static ssize_t pvc_line_proc_write(struct file *file, const char __user *buf,
size_t count, loff_t *pos)
{
int lineno = *(int *)PDE(file->f_path.dentry->d_inode)->data;
char kbuf[PVC_LINELEN];
size_t len;
if (count > PVC_LINELEN)
count = PVC_LINELEN;
BUG_ON(lineno < 0 || lineno > PVC_NLINES);
if (buffer[count-1] == '\n')
count--;
len = min(count, sizeof(kbuf) - 1);
if (copy_from_user(kbuf, buf, len))
return -EFAULT;
kbuf[len] = '\0';
if (len > 0 && kbuf[len - 1] == '\n')
len--;
mutex_lock(&pvc_mutex);
strncpy(pvc_lines[lineno], buffer, count);
pvc_lines[lineno][count] = '\0';
strncpy(pvc_lines[lineno], kbuf, len);
pvc_lines[lineno][len] = '\0';
mutex_unlock(&pvc_mutex);
tasklet_schedule(&pvc_display_tasklet);
return origcount;
return count;
}
static int pvc_proc_write_scroll(struct file *file, const char *buffer,
unsigned long count, void *data)
static const struct file_operations pvc_line_proc_fops = {
.owner = THIS_MODULE,
.open = pvc_line_proc_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
.write = pvc_line_proc_write,
};
static ssize_t pvc_scroll_proc_write(struct file *file, const char __user *buf,
size_t count, loff_t *pos)
{
int origcount = count;
int cmd = simple_strtol(buffer, NULL, 10);
char kbuf[42];
size_t len;
int cmd;
len = min(count, sizeof(kbuf) - 1);
if (copy_from_user(kbuf, buf, len))
return -EFAULT;
kbuf[len] = '\0';
cmd = simple_strtol(kbuf, NULL, 10);
mutex_lock(&pvc_mutex);
if (scroll_interval != 0)
@ -110,22 +130,31 @@ static int pvc_proc_write_scroll(struct file *file, const char *buffer,
}
mutex_unlock(&pvc_mutex);
return origcount;
return count;
}
static int pvc_proc_read_scroll(char *page, char **start,
off_t off, int count,
int *eof, void *data)
static int pvc_scroll_proc_show(struct seq_file *m, void *v)
{
char *origpage = page;
mutex_lock(&pvc_mutex);
page += sprintf(page, "%d\n", scroll_dir * scroll_interval);
seq_printf(m, "%d\n", scroll_dir * scroll_interval);
mutex_unlock(&pvc_mutex);
return page - origpage;
return 0;
}
static int pvc_scroll_proc_open(struct inode *inode, struct file *file)
{
return single_open(file, pvc_scroll_proc_show, NULL);
}
static const struct file_operations pvc_scroll_proc_fops = {
.owner = THIS_MODULE,
.open = pvc_scroll_proc_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
.write = pvc_scroll_proc_write,
};
void pvc_proc_timerfunc(unsigned long data)
{
@ -163,22 +192,16 @@ static int __init pvc_proc_init(void)
pvc_linedata[i] = i;
}
for (i = 0; i < PVC_NLINES; i++) {
proc_entry = create_proc_entry(pvc_linename[i], 0644,
pvc_display_dir);
proc_entry = proc_create_data(pvc_linename[i], 0644, pvc_display_dir,
&pvc_line_proc_fops, &pvc_linedata[i]);
if (proc_entry == NULL)
goto error;
proc_entry->read_proc = pvc_proc_read_line;
proc_entry->write_proc = pvc_proc_write_line;
proc_entry->data = &pvc_linedata[i];
}
proc_entry = create_proc_entry("scroll", 0644, pvc_display_dir);
proc_entry = proc_create("scroll", 0644, pvc_display_dir,
&pvc_scroll_proc_fops);
if (proc_entry == NULL)
goto error;
proc_entry->write_proc = pvc_proc_write_scroll;
proc_entry->read_proc = pvc_proc_read_scroll;
init_timer(&timer);
timer.function = pvc_proc_timerfunc;