clps711xfb: convert to proc_fops

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 21 insertions, 29 deletions

diff --git a/drivers/video/clps711xfb.c b/drivers/video/clps711xfb.c
index 16f5db471ab5..99b354b8e257 100644
--- a/drivers/video/clps711xfb.c
+++ b/drivers/video/clps711xfb.c
@@ -19,8 +19,10 @@
  *
  *  Framebuffer driver for the CLPS7111 and EP7212 processors.
  */
+#include <linux/mm.h>
 #include <linux/module.h>
 #include <linux/kernel.h>
+#include <linux/seq_file.h>
 #include <linux/slab.h>
 #include <linux/fb.h>
 #include <linux/init.h>
@@ -38,14 +40,6 @@ struct fb_info	*cfb;
 
 #define CMAP_MAX_SIZE   16
 
-/* The /proc entry for the backlight. */
-static struct proc_dir_entry *clps7111fb_backlight_proc_entry = NULL;
-
-static int clps7111fb_proc_backlight_read(char *page, char **start, off_t off,
-                int count, int *eof, void *data);
-static int clps7111fb_proc_backlight_write(struct file *file, 
-                const char *buffer, unsigned long count, void *data);
-
 /*
  * LCD AC Prescale.  This comes from the LCD panel manufacturers specifications.
  * This determines how many clocks + 1 of CL1 before the M signal toggles.
@@ -221,26 +215,23 @@ static struct fb_ops clps7111fb_ops = {
         .fb_imageblit   = cfb_imageblit,
 };
 
-static int 
-clps7111fb_proc_backlight_read(char *page, char **start, off_t off,
-                int count, int *eof, void *data)
+static int backlight_proc_show(struct seq_file *m, void *v)
 {
-        /* We need at least two characters, one for the digit, and one for
-         * the terminating NULL. */
-        if (count < 2) 
-                return -EINVAL;
-
         if (machine_is_edb7211()) {
-                return sprintf(page, "%d\n", 
+                seq_printf(m, "%d\n",
                                 (clps_readb(PDDR) & EDB_PD3_LCDBL) ? 1 : 0);
         }
 
         return 0;
 }
 
-static int 
-clps7111fb_proc_backlight_write(struct file *file, const char *buffer, 
-                unsigned long count, void *data)
+static int backlight_proc_open(struct inode *inode, struct file *file)
+{
+        return single_open(file, backlight_proc_show, NULL);
+}
+
+static ssize_t backlight_proc_write(struct file *file, const char *buffer,
+                                    size_t count, loff_t *pos)
 {
         unsigned char char_value;
         int value;
@@ -271,6 +262,15 @@ clps7111fb_proc_backlight_write(struct file *file, const char *buffer,
         return count;
 }
 
+static const struct file_operations backlight_proc_fops = {
+        .owner          = THIS_MODULE,
+        .open           = backlight_proc_open,
+        .read           = seq_read,
+        .llseek         = seq_lseek,
+        .release        = single_release,
+        .write          = backlight_proc_write,
+};
+
 static void __init clps711x_guess_lcd_params(struct fb_info *info)
 {
         unsigned int lcdcon, syscon, size;
@@ -379,19 +379,11 @@ int __init clps711xfb_init(void)
 
         fb_alloc_cmap(&cfb->cmap, CMAP_MAX_SIZE, 0);
 
-        /* Register the /proc entries. */
-        clps7111fb_backlight_proc_entry = create_proc_entry("backlight", 0444,
-                NULL);
-        if (clps7111fb_backlight_proc_entry == NULL) {
+        if (!proc_create("backlight", 0444, NULL, &backlight_proc_fops)) {
                 printk("Couldn't create the /proc entry for the backlight.\n");
                 return -EINVAL;
         }
 
-        clps7111fb_backlight_proc_entry->read_proc = 
-                &clps7111fb_proc_backlight_read;
-        clps7111fb_backlight_proc_entry->write_proc = 
-                &clps7111fb_proc_backlight_write;
-
         /*
          * Power up the LCD
          */