proc: introduce proc_create_single{,_data}

Variants of proc_create{,_data} that directly take a seq_file show
callback and drastically reduces the boilerplate code in the callers.

All trivial callers converted over.

Signed-off-by: Christoph Hellwig <hch@lst.de>

1 files changed, 2 insertions, 14 deletions

diff --git a/arch/um/drivers/ubd_kern.c b/arch/um/drivers/ubd_kern.c
index d4e8c497ae86..dcf5ea28a281 100644
--- a/arch/um/drivers/ubd_kern.c
+++ b/arch/um/drivers/ubd_kern.c
@@ -208,19 +208,6 @@ static int fake_ide_media_proc_show(struct seq_file *m, void *v)
         return 0;
 }
 
-static int fake_ide_media_proc_open(struct inode *inode, struct file *file)
-{
-        return single_open(file, fake_ide_media_proc_show, NULL);
-}
-
-static const struct file_operations fake_ide_media_proc_fops = {
-        .owner          = THIS_MODULE,
-        .open           = fake_ide_media_proc_open,
-        .read           = seq_read,
-        .llseek         = seq_lseek,
-        .release        = single_release,
-};
-
 static void make_ide_entries(const char *dev_name)
 {
         struct proc_dir_entry *dir, *ent;
@@ -231,7 +218,8 @@ static void make_ide_entries(const char *dev_name)
         dir = proc_mkdir(dev_name, proc_ide);
         if(!dir) return;
 
-        ent = proc_create("media", S_IRUGO, dir, &fake_ide_media_proc_fops);
+        ent = proc_create_single("media", S_IRUGO, dir,
+                        fake_ide_media_proc_show);
         if(!ent) return;
         snprintf(name, sizeof(name), "ide0/%s", dev_name);
         proc_symlink(dev_name, proc_ide_root, name);