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[130.180.211.218]) by smtp.gmail.com with ESMTPSA id i16-20020a05600c355000b0040d5a5c523csm5686544wmq.1.2023.12.27.06.36.04 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 27 Dec 2023 06:36:06 -0800 (PST) From: Daniel Lezcano To: tglx@linutronix.de Cc: kernel test robot , Shawn Guo , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam , NXP Linux Team , linux-kernel@vger.kernel.org (open list:CLOCKSOURCE, CLOCKEVENT DRIVERS), linux-arm-kernel@lists.infradead.org (moderated list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE) Subject: [PATCH] clocksource/drivers/imx: Fix -Wunused-but-set-variable warning Date: Wed, 27 Dec 2023 15:35:46 +0100 Message-Id: <20231227143546.2823683-1-daniel.lezcano@linaro.org> X-Mailer: git-send-email 2.34.1 MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20231227_063611_293022_D4C19C1A X-CRM114-Status: GOOD ( 14.45 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org All warnings (new ones prefixed by >>): drivers/clocksource/timer-imx-gpt.c: In function 'mxc_timer_interrupt': >> drivers/clocksource/timer-imx-gpt.c:279:18: warning: variable 'tstat' set but not used [-Wunused-but-set-variable] 279 | uint32_t tstat; | ^~~~~ vim +/tstat +279 drivers/clocksource/timer-imx-gpt.c The change remove the tstats assignment but not the reading of the register, assuming the register may be a ROR (Reset On Read) which happens in the driver's interrupt registers. Fixes: df181e382816 ("clocksource/drivers/imx-gpt: Add support for ARM64") Reported-by: kernel test robot Closes: https://lore.kernel.org/oe-kbuild-all/202312231803.XzPddRa5-lkp@intel.com/ Signed-off-by: Daniel Lezcano --- drivers/clocksource/timer-imx-gpt.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/clocksource/timer-imx-gpt.c b/drivers/clocksource/timer-imx-gpt.c index 6a878d227a13..489e69169ed4 100644 --- a/drivers/clocksource/timer-imx-gpt.c +++ b/drivers/clocksource/timer-imx-gpt.c @@ -258,9 +258,8 @@ static irqreturn_t mxc_timer_interrupt(int irq, void *dev_id) { struct clock_event_device *ced = dev_id; struct imx_timer *imxtm = to_imx_timer(ced); - uint32_t tstat; - tstat = readl_relaxed(imxtm->base + imxtm->gpt->reg_tstat); + readl_relaxed(imxtm->base + imxtm->gpt->reg_tstat); imxtm->gpt->gpt_irq_acknowledge(imxtm);