linux-kernel - Re: [PATCH] comedi: pcmmio.c: Fix coding style

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Date:	Thu, 12 Nov 2015 17:57:11 +0000
From:	Ian Abbott <abbotti@....co.uk>
To:	Ranjith Thangavel <ranjithece24@...il.com>,
	gregkh@...uxfoundation.org
Cc:	hsweeten@...ionengravers.com, devel@...verdev.osuosl.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] comedi: pcmmio.c: Fix coding style - use BIT macro

On 11/11/15 15:48, Ranjith Thangavel wrote:
> BIT macro is used for defining BIT location instead of
> shifting operator - coding style issue
>
> Signed-off-by: Ranjith Thangavel <ranjithece24@...il.com>
> ---
>   drivers/staging/comedi/drivers/pcmmio.c |   44 +++++++++++++++----------------
>   1 file changed, 22 insertions(+), 22 deletions(-)
>
> diff --git a/drivers/staging/comedi/drivers/pcmmio.c b/drivers/staging/comedi/drivers/pcmmio.c
> index 10472e6..f7ec224 100644
> --- a/drivers/staging/comedi/drivers/pcmmio.c
> +++ b/drivers/staging/comedi/drivers/pcmmio.c
> @@ -84,25 +84,25 @@
>   #define PCMMIO_AI_LSB_REG			0x00
>   #define PCMMIO_AI_MSB_REG			0x01
>   #define PCMMIO_AI_CMD_REG			0x02
> -#define PCMMIO_AI_CMD_SE			(1 << 7)
> -#define PCMMIO_AI_CMD_ODD_CHAN			(1 << 6)
> +#define PCMMIO_AI_CMD_SE				BIT(7)
> +#define PCMMIO_AI_CMD_ODD_CHAN			BIT(6)
>   #define PCMMIO_AI_CMD_CHAN_SEL(x)		(((x) & 0x3) << 4)
>   #define PCMMIO_AI_CMD_RANGE(x)			(((x) & 0x3) << 2)
> -#define PCMMIO_RESOURCE_REG			0x02
> +#define PCMMIO_RESOURCE_REG				0x02
>   #define PCMMIO_RESOURCE_IRQ(x)			(((x) & 0xf) << 0)
>   #define PCMMIO_AI_STATUS_REG			0x03
> -#define PCMMIO_AI_STATUS_DATA_READY		(1 << 7)
> -#define PCMMIO_AI_STATUS_DATA_DMA_PEND		(1 << 6)
> -#define PCMMIO_AI_STATUS_CMD_DMA_PEND		(1 << 5)
> -#define PCMMIO_AI_STATUS_IRQ_PEND		(1 << 4)
> -#define PCMMIO_AI_STATUS_DATA_DRQ_ENA		(1 << 2)
> -#define PCMMIO_AI_STATUS_REG_SEL		(1 << 3)
> -#define PCMMIO_AI_STATUS_CMD_DRQ_ENA		(1 << 1)
> -#define PCMMIO_AI_STATUS_IRQ_ENA		(1 << 0)
> +#define PCMMIO_AI_STATUS_DATA_READY		BIT(7)
> +#define PCMMIO_AI_STATUS_DATA_DMA_PEND	BIT(6)
> +#define PCMMIO_AI_STATUS_CMD_DMA_PEND	BIT(5)
> +#define PCMMIO_AI_STATUS_IRQ_PEND		BIT(4)
> +#define PCMMIO_AI_STATUS_DATA_DRQ_ENA	BIT(2)
> +#define PCMMIO_AI_STATUS_REG_SEL		BIT(3)
> +#define PCMMIO_AI_STATUS_CMD_DRQ_ENA	BIT(1)
> +#define PCMMIO_AI_STATUS_IRQ_ENA		BIT(0)
>   #define PCMMIO_AI_RES_ENA_REG			0x03
> -#define PCMMIO_AI_RES_ENA_CMD_REG_ACCESS	(0 << 3)
> -#define PCMMIO_AI_RES_ENA_AI_RES_ACCESS		(1 << 3)
> -#define PCMMIO_AI_RES_ENA_DIO_RES_ACCESS	(1 << 4)
> +#define PCMMIO_AI_RES_ENA_CMD_REG_ACCESS	0
> +#define PCMMIO_AI_RES_ENA_AI_RES_ACCESS		BIT(3)
> +#define PCMMIO_AI_RES_ENA_DIO_RES_ACCESS	BIT(4)
>   #define PCMMIO_AI_2ND_ADC_OFFSET		0x04
>
>   #define PCMMIO_AO_LSB_REG			0x08
> @@ -125,14 +125,14 @@
>   #define PCMMIO_AO_CMD_CHAN_SEL(x)		(((x) & 0x03) << 1)
>   #define PCMMIO_AO_CMD_CHAN_SEL_ALL		(0x0f << 0)
>   #define PCMMIO_AO_STATUS_REG			0x0b
> -#define PCMMIO_AO_STATUS_DATA_READY		(1 << 7)
> -#define PCMMIO_AO_STATUS_DATA_DMA_PEND		(1 << 6)
> -#define PCMMIO_AO_STATUS_CMD_DMA_PEND		(1 << 5)
> -#define PCMMIO_AO_STATUS_IRQ_PEND		(1 << 4)
> -#define PCMMIO_AO_STATUS_DATA_DRQ_ENA		(1 << 2)
> -#define PCMMIO_AO_STATUS_REG_SEL		(1 << 3)
> -#define PCMMIO_AO_STATUS_CMD_DRQ_ENA		(1 << 1)
> -#define PCMMIO_AO_STATUS_IRQ_ENA		(1 << 0)
> +#define PCMMIO_AO_STATUS_DATA_READY		BIT(7)
> +#define PCMMIO_AO_STATUS_DATA_DMA_PEND	BIT(6)
> +#define PCMMIO_AO_STATUS_CMD_DMA_PEND	BIT(5)
> +#define PCMMIO_AO_STATUS_IRQ_PEND		BIT(4)
> +#define PCMMIO_AO_STATUS_DATA_DRQ_ENA	BIT(2)
> +#define PCMMIO_AO_STATUS_REG_SEL		BIT(3)
> +#define PCMMIO_AO_STATUS_CMD_DRQ_ENA	BIT(1)
> +#define PCMMIO_AO_STATUS_IRQ_ENA		BIT(0)
>   #define PCMMIO_AO_RESOURCE_ENA_REG		0x0b
>   #define PCMMIO_AO_2ND_DAC_OFFSET		0x04
>
>

The macro values used to be more-or-less nicely aligned in a column, but 
now they are not so nicely aligned.  Could you add or delete TABs as 
needed to line them up?  Remember, tab stops are every 8 spaces.

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