diff options
| author | Ryan Salsamendi <rsalsamendi@hotmail.com> | 2017-07-04 13:53:00 -0700 |
|---|---|---|
| committer | Martin Roth <martinroth@google.com> | 2017-07-10 18:15:26 +0000 |
| commit | 5d09d48050db8cd25d49a52141cd8b956f36e6f7 (patch) | |
| tree | 25cfa454607b38bcf8693b7e28e4970e4372f78b /src/drivers/intel/gma/opregion.h | |
| parent | 3f2fe18965fc5404e4d095a25dcb1be48e4040a5 (diff) | |
drivers/intel/gma: Fix undefined behavior
Fix undefined behavior found by clang's -Wshift-sign-overflow, find,
and source inspection. Left shifting an int where the right operand is
>= the width of the type is undefined. Add UL suffix since it's safe
for unsigned types.
Change-Id: I5240a19647c8ad59f64925f3e1c199446a886d2d
Signed-off-by: Ryan Salsamendi <rsalsamendi@hotmail.com>
Reviewed-on: https://review.coreboot.org/20466
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>
Diffstat (limited to 'src/drivers/intel/gma/opregion.h')
| -rw-r--r-- | src/drivers/intel/gma/opregion.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/src/drivers/intel/gma/opregion.h b/src/drivers/intel/gma/opregion.h index 3f943805fb..eebea58b5a 100644 --- a/src/drivers/intel/gma/opregion.h +++ b/src/drivers/intel/gma/opregion.h @@ -168,7 +168,7 @@ typedef struct { #define IGD_BACKLIGHT_BRIGHTNESS 0xff #define IGD_INITIAL_BRIGHTNESS 0x64 -#define IGD_FIELD_VALID (1 << 31) +#define IGD_FIELD_VALID (1UL << 31) #define IGD_WORD_FIELD_VALID (1 << 15) #define IGD_PFIT_STRETCH 6 |