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proc: introduce proc_create_single{,_data}

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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>
This commit is contained in:
Christoph Hellwig
2018-05-15 15:57:23 +02:00
parent 44414d82cf
commit 3f3942aca6
85 changed files with 235 additions and 1509 deletions
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16
arch/um/drivers/ubd_kern.c
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@@ -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);