[PATCH] clocksource/drivers/imx: Fix -Wunused-but-set-variable warning

[Daniel Lezcano]

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 <lkp@xxxxxxxxx>
Closes: https://lore.kernel.org/oe-kbuild-all/202312231803.XzPddRa5-lkp@xxxxxxxxx/
Signed-off-by: Daniel Lezcano <daniel.lezcano@xxxxxxxxxx>
---
 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);
 
-- 
2.34.1