[v2] drivers:block:Use IS_ERR() to check debugfs_create_dir() return value

[PATCH v2] drivers:block:Use IS_ERR() to check debugfs_create_dir() return value

Posted by Yang Ruibin 1 year, 5 months ago

The debugfs_create_dir() function returns error pointers.It
never returns NULL. So use IS_ERR() to check its return value.

Fixes: 011d82611172 ("RAS: Add a Corrected Errors Collector")
Signed-off-by: Yang Ruibin <11162571@vivo.com>
---
 drivers/block/pktcdvd.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/block/pktcdvd.c b/drivers/block/pktcdvd.c
index 7cece5884b9c..030b7a063a0b 100644
--- a/drivers/block/pktcdvd.c
+++ b/drivers/block/pktcdvd.c
@@ -498,7 +498,7 @@ static void pkt_debugfs_dev_new(struct pktcdvd_device *pd)
 	if (!pkt_debugfs_root)
 		return;
 	pd->dfs_d_root = debugfs_create_dir(pd->disk->disk_name, pkt_debugfs_root);
-	if (!pd->dfs_d_root)
+	if (IS_ERR(pd->dfs_d_root))
 		return;
 
 	pd->dfs_f_info = debugfs_create_file("info", 0444, pd->dfs_d_root,
-- 
2.34.1

Re: [PATCH v2] drivers:block:Use IS_ERR() to check debugfs_create_dir() return value

Posted by Yang Ruibin 1 year, 5 months ago

Sorry, please ignore this patch for now. The wrong Fixes were used. This 
patch will be updated later.

在 2024/8/22 20:41, Yang Ruibin 写道:
> The debugfs_create_dir() function returns error pointers.It
> never returns NULL. So use IS_ERR() to check its return value.
>
> Fixes: 011d82611172 ("RAS: Add a Corrected Errors Collector")
> Signed-off-by: Yang Ruibin <11162571@vivo.com>
> ---
>   drivers/block/pktcdvd.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/block/pktcdvd.c b/drivers/block/pktcdvd.c
> index 7cece5884b9c..030b7a063a0b 100644
> --- a/drivers/block/pktcdvd.c
> +++ b/drivers/block/pktcdvd.c
> @@ -498,7 +498,7 @@ static void pkt_debugfs_dev_new(struct pktcdvd_device *pd)
>   	if (!pkt_debugfs_root)
>   		return;
>   	pd->dfs_d_root = debugfs_create_dir(pd->disk->disk_name, pkt_debugfs_root);
> -	if (!pd->dfs_d_root)
> +	if (IS_ERR(pd->dfs_d_root))
>   		return;
>   
>   	pd->dfs_f_info = debugfs_create_file("info", 0444, pd->dfs_d_root,