linux-kernel - [PATCH] ath6kl: Use cc-disable-warning to disable -Wdangling-pointer

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Message-Id: <20220524145655.869822-1-nathan@kernel.org>
Date:   Tue, 24 May 2022 07:56:55 -0700
From:   Nathan Chancellor <nathan@...nel.org>
To:     "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>
Cc:     Kalle Valo <kvalo@...nel.org>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        Tom Rix <trix@...hat.com>, linux-wireless@...r.kernel.org,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        llvm@...ts.linux.dev, Nathan Chancellor <nathan@...nel.org>,
        "kernelci.org bot" <bot@...nelci.org>
Subject: [PATCH] ath6kl: Use cc-disable-warning to disable -Wdangling-pointer

Clang does not support this option so the build fails:

  error: unknown warning option '-Wno-dangling-pointer' [-Werror,-Wunknown-warning-option]

Use cc-disable-warning so that the option is only added when it is
supported.

Fixes: bd1d129daa3e ("wifi: ath6k: silence false positive -Wno-dangling-pointer warning on GCC 12")
Reported-by: "kernelci.org bot" <bot@...nelci.org>
Signed-off-by: Nathan Chancellor <nathan@...nel.org>
---
 drivers/net/wireless/ath/ath6kl/Makefile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/wireless/ath/ath6kl/Makefile b/drivers/net/wireless/ath/ath6kl/Makefile
index 01cc0d50fee6..a75bfa9fd1cf 100644
--- a/drivers/net/wireless/ath/ath6kl/Makefile
+++ b/drivers/net/wireless/ath/ath6kl/Makefile
@@ -38,7 +38,7 @@ ath6kl_core-y += recovery.o
 
 # FIXME: temporarily silence -Wdangling-pointer on non W=1+ builds
 ifndef KBUILD_EXTRA_WARN
-CFLAGS_htc_mbox.o += -Wno-dangling-pointer
+CFLAGS_htc_mbox.o += $(call cc-disable-warning, dangling-pointer)
 endif
 
 ath6kl_core-$(CONFIG_NL80211_TESTMODE) += testmode.o

base-commit: 677fb7525331375ba2f90f4bc94a80b9b6e697a3
-- 
2.36.1