linux-kernel - Re: [PATCH] staging: comedi: dt2801: Prefer using the BIT macro

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Date:	Mon, 11 Jan 2016 17:31:57 +0000
From:	Ian Abbott <abbotti@....co.uk>
To:	Bhaktipriya Shridhar <bhaktipriya96@...il.com>,
	hsweeten@...ionengravers.com, gregkh@...uxfoundation.org,
	mahfouz.saif.elyazal@...il.com
Cc:	devel@...verdev.osuosl.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] staging: comedi: dt2801: Prefer using the BIT macro

On 11/01/16 16:04, Bhaktipriya Shridhar wrote:
> As suggested by checkpatch.pl, this patch replaces bit shifting on 1 with the
> BIT(x) macro.
>
> Signed-off-by: Bhaktipriya Shridhar <bhaktipriya96@...il.com>
> ---
>   drivers/staging/comedi/drivers/dt2801.c | 18 +++++++++---------
>   1 file changed, 9 insertions(+), 9 deletions(-)
>
> diff --git a/drivers/staging/comedi/drivers/dt2801.c b/drivers/staging/comedi/drivers/dt2801.c
> index 80e38de..6c7b4d2 100644
> --- a/drivers/staging/comedi/drivers/dt2801.c
> +++ b/drivers/staging/comedi/drivers/dt2801.c
> @@ -68,17 +68,17 @@ Configuration options:
>   /* Command modifiers (only used with read/write), EXTTRIG can be
>      used with some other commands.
>   */
> -#define DT_MOD_DMA     (1<<4)
> -#define DT_MOD_CONT    (1<<5)
> -#define DT_MOD_EXTCLK  (1<<6)
> -#define DT_MOD_EXTTRIG (1<<7)
> +#define DT_MOD_DMA     BIT(4)
> +#define DT_MOD_CONT    BIT(5)
> +#define DT_MOD_EXTCLK  BIT(6)
> +#define DT_MOD_EXTTRIG BIT(7)
>
>   /* Bits in status register */
> -#define DT_S_DATA_OUT_READY   (1<<0)
> -#define DT_S_DATA_IN_FULL     (1<<1)
> -#define DT_S_READY            (1<<2)
> -#define DT_S_COMMAND          (1<<3)
> -#define DT_S_COMPOSITE_ERROR  (1<<7)
> +#define DT_S_DATA_OUT_READY   BIT(0)
> +#define DT_S_DATA_IN_FULL     BIT(1)
> +#define DT_S_READY            BIT(2)
> +#define DT_S_COMMAND          BIT(3)
> +#define DT_S_COMPOSITE_ERROR  BIT(7)
>
>   /* registers */
>   #define DT2801_DATA		0
> --
> 2.1.4
>

Thanks!

Reviewed-by: Ian Abbott <abbotti@....co.uk>

-- 
-=( Ian Abbott @ MEV Ltd.    E-mail: <abbotti@....co.uk> )=-
-=(                          Web: http://www.mev.co.uk/  )=-