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| author | Mauro Carvalho Chehab <mchehab+samsung@kernel.org> | 2019-08-22 11:16:42 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab+samsung@kernel.org> | 2019-08-26 14:11:10 -0300 |
| commit | 95c520690f5fafb2cda2ec17f8c76ab3422b0174 (patch) | |
| tree | 0dec0f5683f21100b61b19a141512ebe0bac3aea /drivers/media/platform/s5p-jpeg | |
| parent | cce8ccca80d8388982133192d0a6d9dc2e8ed712 (diff) | |
| download | linux-95c520690f5fafb2cda2ec17f8c76ab3422b0174.tar.bz2 | |
media: don't do a 31 bit shift on a signed int
On 32-bits archs, a signed integer has 31 bits plus on extra
bit for signal. Due to that, touching the 32th bit with something
like:
int bar = 1 << 31;
has an undefined behavior in C on 32 bit architectures, as it
touches the signal bit. This is warned by cppcheck.
Instead, force the numbers to be unsigned, in order to solve this
issue.
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Diffstat (limited to 'drivers/media/platform/s5p-jpeg')
| -rw-r--r-- | drivers/media/platform/s5p-jpeg/jpeg-regs.h | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/drivers/media/platform/s5p-jpeg/jpeg-regs.h b/drivers/media/platform/s5p-jpeg/jpeg-regs.h index bab7fa46b89a..86f376b50581 100644 --- a/drivers/media/platform/s5p-jpeg/jpeg-regs.h +++ b/drivers/media/platform/s5p-jpeg/jpeg-regs.h @@ -121,14 +121,14 @@ /* JPEG timer setting register */ #define S5P_JPG_TIMER_SE 0x7c -#define S5P_TIMER_INT_EN_MASK (0x1 << 31) -#define S5P_TIMER_INT_EN (0x1 << 31) +#define S5P_TIMER_INT_EN_MASK (0x1UL << 31) +#define S5P_TIMER_INT_EN (0x1UL << 31) #define S5P_TIMER_INIT_MASK 0x7fffffff /* JPEG timer status register */ #define S5P_JPG_TIMER_ST 0x80 #define S5P_TIMER_INT_STAT_SHIFT 31 -#define S5P_TIMER_INT_STAT_MASK (0x1 << S5P_TIMER_INT_STAT_SHIFT) +#define S5P_TIMER_INT_STAT_MASK (0x1UL << S5P_TIMER_INT_STAT_SHIFT) #define S5P_TIMER_CNT_SHIFT 0 #define S5P_TIMER_CNT_MASK 0x7fffffff @@ -562,13 +562,13 @@ /* JPEG timer setting register */ #define EXYNOS3250_TIMER_SE 0x148 #define EXYNOS3250_TIMER_INT_EN_SHIFT 31 -#define EXYNOS3250_TIMER_INT_EN (1 << EXYNOS3250_TIMER_INT_EN_SHIFT) +#define EXYNOS3250_TIMER_INT_EN (1UL << EXYNOS3250_TIMER_INT_EN_SHIFT) #define EXYNOS3250_TIMER_INIT_MASK 0x7fffffff /* JPEG timer status register */ #define EXYNOS3250_TIMER_ST 0x14c #define EXYNOS3250_TIMER_INT_STAT_SHIFT 31 -#define EXYNOS3250_TIMER_INT_STAT (1 << EXYNOS3250_TIMER_INT_STAT_SHIFT) +#define EXYNOS3250_TIMER_INT_STAT (1UL << EXYNOS3250_TIMER_INT_STAT_SHIFT) #define EXYNOS3250_TIMER_CNT_SHIFT 0 #define EXYNOS3250_TIMER_CNT_MASK 0x7fffffff |