iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

rtlwifi: Remove unnecessary NULL check in rtl_regd_init

Browse Source 
commit 091c6e9c083f7ebaff00b37ad13562d51464d175 upstream.

When building with Clang + -Wtautological-pointer-compare:

drivers/net/wireless/realtek/rtlwifi/regd.c:389:33: warning: comparison
of address of 'rtlpriv->regd' equal to a null pointer is always false
[-Wtautological-pointer-compare]
        if (wiphy == NULL || &rtlpriv->regd == NULL)
                              ~~~~~~~~~^~~~    ~~~~
1 warning generated.

The address of an array member is never NULL unless it is the first
struct member so remove the unnecessary check. This was addressed in
the staging version of the driver in commit f986978b32b3 ("Staging:
rtlwifi: remove unnecessary NULL check").

While we are here, fix the following checkpatch warning:

CHECK: Comparison to NULL could be written "!wiphy"
35: FILE: drivers/net/wireless/realtek/rtlwifi/regd.c:389:
+       if (wiphy == NULL)

Fixes: 0c8173385e54 ("rtl8192ce: Add new driver")
Link:https://github.com/ClangBuiltLinux/linux/issues/750
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Acked-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Nathan Chancellor 2019-10-22 17:47:03 -07:00 committed by Greg Kroah-Hartman
parent caa13f4790
commit 4915aa3b3b
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/net/wireless/realtek/rtlwifi/regd.c
View File

@ -427,7 +427,7 @@ int rtl_regd_init(struct ieee80211_hw *hw,
struct wiphy *wiphy = hw->wiphy;
struct country_code_to_enum_rd *country = NULL;
if (wiphy == NULL || &rtlpriv->regd == NULL)
if (!wiphy)
return -EINVAL;
/* init country_code from efuse channel plan */