* [PATCH] iio: adc: at91-sama5d2_adc: fix warning for uninitialized 'val' variable
@ 2021-08-31 6:48 Eugen Hristev
0 siblings, 0 replies; only message in thread
From: Eugen Hristev @ 2021-08-31 6:48 UTC (permalink / raw)
To: jic23
Cc: linux-iio, linux-arm-kernel, linux-kernel, Eugen Hristev,
kernel test robot
>> drivers/iio/adc/at91-sama5d2_adc.c:722:11: warning: variable 'val' is used uninitialized whenever 'if' condition is false [-Wsometimes-uninitialized]
else if (reg == st->soc_info.platform->layout->YPOSR)
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/iio/adc/at91-sama5d2_adc.c:725:7: note: uninitialized use occurs here
if (!val)
^~~
drivers/iio/adc/at91-sama5d2_adc.c:722:7: note: remove the 'if' if its condition is always true
else if (reg == st->soc_info.platform->layout->YPOSR)
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/iio/adc/at91-sama5d2_adc.c:711:9: note: initialize the variable 'val' to silence this warning
u32 val;
^
= 0
1 warning generated.
Fixed by initializing 'val' variable.
Fixes: 29edec2b98ff ("iio: adc: at91-sama5d2_adc: convert to platform specific data structures")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Eugen Hristev <eugen.hristev@microchip.com>
---
Hi Jonathan,
If you can still rebase your testing branch, maybe you can squash this into the
original patch, no need to make a separate commit I guess.
I fixed this as soon as the report came out from the 0day robot.
Thanks !
Eugen
drivers/iio/adc/at91-sama5d2_adc.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/iio/adc/at91-sama5d2_adc.c b/drivers/iio/adc/at91-sama5d2_adc.c
index 29c7441f9f27..f8a9ad50a00b 100644
--- a/drivers/iio/adc/at91-sama5d2_adc.c
+++ b/drivers/iio/adc/at91-sama5d2_adc.c
@@ -846,7 +846,7 @@ static int at91_adc_configure_touch(struct at91_adc_state *st, bool state)
static u16 at91_adc_touch_pos(struct at91_adc_state *st, int reg)
{
- u32 val;
+ u32 val = 0;
u32 scale, result, pos;
/*
--
2.25.1
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