diff mbox series

net: ethernet: mtk_eth_soc: fix error check return value of debugfs_create_dir()

Message ID 20220419014056.2561750-1-lv.ruyi@zte.com.cn (mailing list archive)
State Superseded
Delegated to: Netdev Maintainers
Headers show
Series net: ethernet: mtk_eth_soc: fix error check return value of debugfs_create_dir() | expand

Checks

Context Check Description
netdev/tree_selection success Guessed tree name to be net-next
netdev/fixes_present success Fixes tag not required for -next series
netdev/subject_prefix warning Target tree name not specified in the subject
netdev/cover_letter success Single patches do not need cover letters
netdev/patch_count success Link
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 0 this patch: 0
netdev/cc_maintainers fail 1 blamed authors not CCed: nbd@nbd.name; 7 maintainers not CCed: john@phrozen.org linux-mediatek@lists.infradead.org Mark-MC.Lee@mediatek.com matthias.bgg@gmail.com sean.wang@mediatek.com nbd@nbd.name linux-arm-kernel@lists.infradead.org
netdev/build_clang success Errors and warnings before: 0 this patch: 0
netdev/module_param success Was 0 now: 0
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/verify_fixes success Fixes tag looks correct
netdev/build_allmodconfig_warn success Errors and warnings before: 0 this patch: 0
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 8 lines checked
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0

Commit Message

CGEL April 19, 2022, 1:40 a.m. UTC
From: Lv Ruyi <lv.ruyi@zte.com.cn>

If an error occurs, debugfs_create_file() will return ERR_PTR(-ERROR),
so use IS_ERR() to check it.

Fixes: 804775dfc288 ("net: ethernet: mtk_eth_soc: add support for Wireless Ethernet Dispatch (WED)")
Reported-by: Zeal Robot <zealci@zte.com.cn>
Signed-off-by: Lv Ruyi <lv.ruyi@zte.com.cn>
---
 drivers/net/ethernet/mediatek/mtk_wed_debugfs.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Comments

CGEL April 19, 2022, 1:52 a.m. UTC | #1
so sorry, please ignore the noise, I sent the mail to the wrong person.

Thanks
Lv Ruyi
Andrew Lunn April 19, 2022, 12:03 p.m. UTC | #2
On Tue, Apr 19, 2022 at 01:40:56AM +0000, cgel.zte@gmail.com wrote:
> From: Lv Ruyi <lv.ruyi@zte.com.cn>
> 
> If an error occurs, debugfs_create_file() will return ERR_PTR(-ERROR),
> so use IS_ERR() to check it.
> 
> Fixes: 804775dfc288 ("net: ethernet: mtk_eth_soc: add support for Wireless Ethernet Dispatch (WED)")
> Reported-by: Zeal Robot <zealci@zte.com.cn>
> Signed-off-by: Lv Ruyi <lv.ruyi@zte.com.cn>
> ---
>  drivers/net/ethernet/mediatek/mtk_wed_debugfs.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/net/ethernet/mediatek/mtk_wed_debugfs.c b/drivers/net/ethernet/mediatek/mtk_wed_debugfs.c
> index a81d3fd1a439..0c284c18a8d7 100644
> --- a/drivers/net/ethernet/mediatek/mtk_wed_debugfs.c
> +++ b/drivers/net/ethernet/mediatek/mtk_wed_debugfs.c
> @@ -165,7 +165,7 @@ void mtk_wed_hw_add_debugfs(struct mtk_wed_hw *hw)
>  
>  	snprintf(hw->dirname, sizeof(hw->dirname), "wed%d", hw->index);
>  	dir = debugfs_create_dir(hw->dirname, NULL);
> -	if (!dir)
> +	if (IS_ERR(dir))
>  		return;

You should not check the return value from any debugfs calls.

If Zeal bot is saying you should, Zeal is broken/does not understand
debugfs.

   Andrew
diff mbox series

Patch

diff --git a/drivers/net/ethernet/mediatek/mtk_wed_debugfs.c b/drivers/net/ethernet/mediatek/mtk_wed_debugfs.c
index a81d3fd1a439..0c284c18a8d7 100644
--- a/drivers/net/ethernet/mediatek/mtk_wed_debugfs.c
+++ b/drivers/net/ethernet/mediatek/mtk_wed_debugfs.c
@@ -165,7 +165,7 @@  void mtk_wed_hw_add_debugfs(struct mtk_wed_hw *hw)
 
 	snprintf(hw->dirname, sizeof(hw->dirname), "wed%d", hw->index);
 	dir = debugfs_create_dir(hw->dirname, NULL);
-	if (!dir)
+	if (IS_ERR(dir))
 		return;
 
 	hw->debugfs_dir = dir;