[PATCH v5] pktcdvd:Remove unnecessary debugfs_create_dir() error check in pkt_debugfs_dev_new()

[PATCH v5] pktcdvd:Remove unnecessary debugfs_create_dir() error check in pkt_debugfs_dev_new()

[Yang Ruibin]

This patch removes the debugfs_create_dir() error checking in
pkt_debugfs_dev_new(). Because the debugfs_create_dir() is developed
in a way that the caller can safely handle the errors that
occur during the creation of DebugFS nodes.

Signed-off-by: Yang Ruibin <11162571@vivo.com>
---
Changes v5:
-Changed the subject line
-Fixes information has been deleted
---
 drivers/block/pktcdvd.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/drivers/block/pktcdvd.c b/drivers/block/pktcdvd.c
index 7cece5884b9c..3edb37a41312 100644
--- a/drivers/block/pktcdvd.c
+++ b/drivers/block/pktcdvd.c
@@ -498,8 +498,6 @@ 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)
-		return;
 
 	pd->dfs_f_info = debugfs_create_file("info", 0444, pd->dfs_d_root,
 					     pd, &pkt_seq_fops);
-- 
2.34.1

Re: [PATCH v5] pktcdvd:Remove unnecessary debugfs_create_dir() error check in pkt_debugfs_dev_new()

[Damien Le Moal]

On 8/26/24 1:28 PM, Yang Ruibin wrote:
> This patch removes the debugfs_create_dir() error checking in
> pkt_debugfs_dev_new(). Because the debugfs_create_dir() is developed
> in a way that the caller can safely handle the errors that
> occur during the creation of DebugFS nodes.

Missing sapce after the prefix in the patch title: "pktcdvd: Remove..."

And the commit message explanation makes no sense. You likely wanted to say
that *debugfs_create_file()* accepts a parent dentry that is an error pointer
and returns an error in such case, right ?

Also, there is no need for phrasing like "This patch removes...". We know it is
a patch, we are looking at it :) So simply be assertive: "Remove ..."

> 
> Signed-off-by: Yang Ruibin <11162571@vivo.com>
> ---
> Changes v5:
> -Changed the subject line
> -Fixes information has been deleted
> ---
>  drivers/block/pktcdvd.c | 2 --
>  1 file changed, 2 deletions(-)
> 
> diff --git a/drivers/block/pktcdvd.c b/drivers/block/pktcdvd.c
> index 7cece5884b9c..3edb37a41312 100644
> --- a/drivers/block/pktcdvd.c
> +++ b/drivers/block/pktcdvd.c
> @@ -498,8 +498,6 @@ 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)
> -		return;
>  
>  	pd->dfs_f_info = debugfs_create_file("info", 0444, pd->dfs_d_root,
>  					     pd, &pkt_seq_fops);

-- 
Damien Le Moal
Western Digital Research