diff options
| author | Mauro Carvalho Chehab <mchehab+samsung@kernel.org> | 2019-08-22 11:06:32 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab+samsung@kernel.org> | 2019-08-26 14:08:50 -0300 |
| commit | cce8ccca80d8388982133192d0a6d9dc2e8ed712 (patch) | |
| tree | 4e37956f86eba2c619fe2a4d56af0b5c993411ae /drivers/media/platform/xilinx/xilinx-vip.h | |
| parent | 093347abc7a4e0490e3c962ecbde2dc272a8f708 (diff) | |
media: use the BIT() macro
As warned by cppcheck:
[drivers/media/dvb-frontends/cx24123.c:434]: (error) Shifting signed 32-bit value by 31 bits is undefined behaviour
[drivers/media/pci/bt8xx/bttv-input.c:87]: (error) Shifting signed 32-bit value by 31 bits is undefined behaviour
[drivers/media/pci/bt8xx/bttv-input.c:98]: (error) Shifting signed 32-bit value by 31 bits is undefined behaviour
...
[drivers/media/v4l2-core/v4l2-ioctl.c:1391]: (error) Shifting signed 32-bit value by 31 bits is undefined behaviour
There are lots of places where we're doing 1 << 31. That's bad,
as, depending on the architecture, this has an undefined behavior.
The BIT() macro is already prepared to handle this, so, let's
just switch all "1 << number" macros by BIT(number) at the header files
with has 1 << 31.
Reviewed-by: Sylwester Nawrocki <s.nawrocki@samsung.com> # exynos4-is and s3c-camif
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> # omap3isp, vsp1, xilinx, wl128x and ipu3
Reviewed-by: Benoit Parrot <bparrot@ti.com> # am437x and ti-vpe
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Diffstat (limited to 'drivers/media/platform/xilinx/xilinx-vip.h')
| -rw-r--r-- | drivers/media/platform/xilinx/xilinx-vip.h | 29 |
1 files changed, 15 insertions, 14 deletions
diff --git a/drivers/media/platform/xilinx/xilinx-vip.h b/drivers/media/platform/xilinx/xilinx-vip.h index 47da39211ae4..f71e2b650453 100644 --- a/drivers/media/platform/xilinx/xilinx-vip.h +++ b/drivers/media/platform/xilinx/xilinx-vip.h @@ -12,6 +12,7 @@ #ifndef __XILINX_VIP_H__ #define __XILINX_VIP_H__ +#include <linux/bitops.h> #include <linux/io.h> #include <media/v4l2-subdev.h> @@ -35,23 +36,23 @@ struct clk; /* Xilinx Video IP Control Registers */ #define XVIP_CTRL_CONTROL 0x0000 -#define XVIP_CTRL_CONTROL_SW_ENABLE (1 << 0) -#define XVIP_CTRL_CONTROL_REG_UPDATE (1 << 1) -#define XVIP_CTRL_CONTROL_BYPASS (1 << 4) -#define XVIP_CTRL_CONTROL_TEST_PATTERN (1 << 5) -#define XVIP_CTRL_CONTROL_FRAME_SYNC_RESET (1 << 30) -#define XVIP_CTRL_CONTROL_SW_RESET (1 << 31) +#define XVIP_CTRL_CONTROL_SW_ENABLE BIT(0) +#define XVIP_CTRL_CONTROL_REG_UPDATE BIT(1) +#define XVIP_CTRL_CONTROL_BYPASS BIT(4) +#define XVIP_CTRL_CONTROL_TEST_PATTERN BIT(5) +#define XVIP_CTRL_CONTROL_FRAME_SYNC_RESET BIT(30) +#define XVIP_CTRL_CONTROL_SW_RESET BIT(31) #define XVIP_CTRL_STATUS 0x0004 -#define XVIP_CTRL_STATUS_PROC_STARTED (1 << 0) -#define XVIP_CTRL_STATUS_EOF (1 << 1) +#define XVIP_CTRL_STATUS_PROC_STARTED BIT(0) +#define XVIP_CTRL_STATUS_EOF BIT(1) #define XVIP_CTRL_ERROR 0x0008 -#define XVIP_CTRL_ERROR_SLAVE_EOL_EARLY (1 << 0) -#define XVIP_CTRL_ERROR_SLAVE_EOL_LATE (1 << 1) -#define XVIP_CTRL_ERROR_SLAVE_SOF_EARLY (1 << 2) -#define XVIP_CTRL_ERROR_SLAVE_SOF_LATE (1 << 3) +#define XVIP_CTRL_ERROR_SLAVE_EOL_EARLY BIT(0) +#define XVIP_CTRL_ERROR_SLAVE_EOL_LATE BIT(1) +#define XVIP_CTRL_ERROR_SLAVE_SOF_EARLY BIT(2) +#define XVIP_CTRL_ERROR_SLAVE_SOF_LATE BIT(3) #define XVIP_CTRL_IRQ_ENABLE 0x000c -#define XVIP_CTRL_IRQ_ENABLE_PROC_STARTED (1 << 0) -#define XVIP_CTRL_IRQ_EOF (1 << 1) +#define XVIP_CTRL_IRQ_ENABLE_PROC_STARTED BIT(0) +#define XVIP_CTRL_IRQ_EOF BIT(1) #define XVIP_CTRL_VERSION 0x0010 #define XVIP_CTRL_VERSION_MAJOR_MASK (0xff << 24) #define XVIP_CTRL_VERSION_MAJOR_SHIFT 24 |