[PATCH wireless-next v2 1/3] wifi: iwlwifi: mei: Drop unnecessary error check for debugfs_create_dir()

[Jinjie Ruan]

debugfs_create_dir() returns ERR_PTR and never return NULL.

As Russell suggested, this patch removes the error checking for
debugfs_create_dir(). This is because the DebugFS kernel API is developed
in a way that the caller can safely ignore the errors that occur during
the creation of DebugFS nodes. The debugfs APIs have a IS_ERR() judge in
start_creating() which can handle it gracefully. So these checks are
unnecessary.

Fixes: 4ea7da5fad43 ("iwlwifi: mei: add debugfs hooks")
Signed-off-by: Jinjie Ruan <ruanjinjie at huawei.com>
Suggested-by: Russell King (Oracle) <linux at armlinux.org.uk>
---
v2:
- Remove the err check instead of using IS_ERR to replace NULL check.
- Update the commit message and title.
---
 drivers/net/wireless/intel/iwlwifi/mei/main.c | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/drivers/net/wireless/intel/iwlwifi/mei/main.c b/drivers/net/wireless/intel/iwlwifi/mei/main.c
index 1dd9106c6513..3e25c78a8d58 100644
--- a/drivers/net/wireless/intel/iwlwifi/mei/main.c
+++ b/drivers/net/wireless/intel/iwlwifi/mei/main.c
@@ -1894,9 +1894,6 @@ static void iwl_mei_dbgfs_register(struct iwl_mei *mei)
 {
 	mei->dbgfs_dir = debugfs_create_dir(KBUILD_MODNAME, NULL);
 
-	if (!mei->dbgfs_dir)
-		return;
-
 	debugfs_create_ulong("status", S_IRUSR,
 			     mei->dbgfs_dir, &iwl_mei_status);
 	debugfs_create_file("send_start_message", S_IWUSR, mei->dbgfs_dir,
-- 
2.34.1