Re: [PATCH v2] drivers: wireless: ath5k: fix parameter check in ath5k_debug_init_device()

From: Jiri Slaby
Date: Thu Jul 13 2023 - 01:14:34 EST


On 13. 07. 23, 5:36, Minjie Du wrote:
Make IS_ERR_OR_NULL() judge the debugfs_create_dir() function return
in ath5k_debug_init_device().

Signed-off-by: Minjie Du <duminjie@xxxxxxxx>
Acked-by: Luis Chamberlain <mcgrof@xxxxxxxxxx>
---
v1-v2:
use IS_ERR_OR_NULL() instead of IS_ERR()
---
drivers/net/wireless/ath/ath5k/debug.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/wireless/ath/ath5k/debug.c b/drivers/net/wireless/ath/ath5k/debug.c
index 4b41160e5..7c8823759 100644
--- a/drivers/net/wireless/ath/ath5k/debug.c
+++ b/drivers/net/wireless/ath/ath5k/debug.c
@@ -982,7 +982,7 @@ ath5k_debug_init_device(struct ath5k_hw *ah)
ah->debug.level = ath5k_debug;
phydir = debugfs_create_dir("ath5k", ah->hw->wiphy->debugfsdir);
- if (!phydir)
+ if (IS_ERR_OR_NULL(phydir))

When can debugfs_create_dir() return NULL?

return;
debugfs_create_file("debug", 0600, phydir, ah, &fops_debug);

--
js
suse labs