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, 1 insertions, 13 deletions

diff --git a/drivers/mtd/mtdcore.c b/drivers/mtd/mtdcore.c
index 807d17d863b3..64a1fcaafd9a 100644
--- a/drivers/mtd/mtdcore.c
+++ b/drivers/mtd/mtdcore.c
@@ -1829,18 +1829,6 @@ static int mtd_proc_show(struct seq_file *m, void *v)
         mutex_unlock(&mtd_table_mutex);
         return 0;
 }
-
-static int mtd_proc_open(struct inode *inode, struct file *file)
-{
-        return single_open(file, mtd_proc_show, NULL);
-}
-
-static const struct file_operations mtd_proc_ops = {
-        .open           = mtd_proc_open,
-        .read           = seq_read,
-        .llseek         = seq_lseek,
-        .release        = single_release,
-};
 #endif /* CONFIG_PROC_FS */
 
 /*====================================================================*/
@@ -1883,7 +1871,7 @@ static int __init init_mtd(void)
                 goto err_bdi;
         }
 
-        proc_mtd = proc_create("mtd", 0, NULL, &mtd_proc_ops);
+        proc_mtd = proc_create_single("mtd", 0, NULL, mtd_proc_show);
 
         ret = init_mtdchar();
         if (ret)