[PATCH] [media] v4l: omap4iss: Fix using BIT macro
Mauro Carvalho Chehab
mchehab at s-opensource.com
Mon Oct 3 09:58:22 UTC 2016
Em Sat, 1 Oct 2016 16:37:46 -0700
Wayne Porter <wporter82 at gmail.com> escreveu:
> Checks found by checkpatch
>
> Signed-off-by: Wayne Porter <wporter82 at gmail.com>
> ---
> drivers/staging/media/omap4iss/iss_regs.h | 76 +++++++++++++++----------------
> 1 file changed, 38 insertions(+), 38 deletions(-)
>
> diff --git a/drivers/staging/media/omap4iss/iss_regs.h b/drivers/staging/media/omap4iss/iss_regs.h
> index cb415e8..c675212 100644
> --- a/drivers/staging/media/omap4iss/iss_regs.h
> +++ b/drivers/staging/media/omap4iss/iss_regs.h
> @@ -42,7 +42,7 @@
> #define ISS_CTRL_CLK_DIV_MASK (3 << 4)
> #define ISS_CTRL_INPUT_SEL_MASK (3 << 2)
> #define ISS_CTRL_INPUT_SEL_CSI2A (0 << 2)
> -#define ISS_CTRL_INPUT_SEL_CSI2B (1 << 2)
> +#define ISS_CTRL_INPUT_SEL_CSI2B BIT(2)
Converting just a few of such macros won't help. Either convert all
or none.
Also, as most of the bit masks here have more than one bit, you should
use GENMASK(), instead of BIT, like:
#define ISS_CTRL_CLK_DIV_MASK GENMASK(4, 5)
#define ISS_CTRL_INPUT_SEL_MASK GENMASK(2, 3)
#define ISS_CTRL_INPUT_SEL_CSI2A 0
#define ISS_CTRL_INPUT_SEL_CSI2B BIT(2)
Yet, not sure if I would like such patch, as this kind of change
could easily break the driver if you make any typo at the GENMASK
parameters.
Thanks,
Mauro
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