rtlwifi: Remove unnecessary NULL check in rtl_regd_init

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>

diff --git a/drivers/net/wireless/realtek/rtlwifi/regd.c b/drivers/net/wireless/realtek/rtlwifi/regd.c
index 6ee6bf8e7eafd86b45feca53ff742307c704821f..ab53cf42cf425a19bb80463fb4a9897d586555ff 100644 (file)
--- a/drivers/net/wireless/realtek/rtlwifi/regd.c
+++ b/drivers/net/wireless/realtek/rtlwifi/regd.c
@@ -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 */