linux-kernel - Re: [PATCH 12/18] dmaengine/amba-pl08x: Add prep_single_byte

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Message-ID: <20110729110638.GH25640@n2100.arm.linux.org.uk>
Date:	Fri, 29 Jul 2011 12:06:38 +0100
From:	Russell King - ARM Linux <linux@....linux.org.uk>
To:	Viresh Kumar <viresh.kumar@...com>
Cc:	linus.walleij@...aro.org, vinod.koul@...el.com,
	dan.j.williams@...el.com, linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, armando.visconti@...com,
	shiraz.hashim@...com, vipin.kumar@...com, rajeev-dlh.kumar@...com,
	deepak.sikri@...com, vipulkumar.samar@...com, amit.virdi@...com,
	pratyush.anand@...com, bhupesh.sharma@...com,
	viresh.linux@...il.com
Subject: Re: [PATCH 12/18] dmaengine/amba-pl08x: Add
	prep_single_byte_llis() routine

On Fri, Jul 29, 2011 at 04:19:22PM +0530, Viresh Kumar wrote:
> Code for creating single byte llis is present at several places. Create a
> routine to avoid code redundancy.
> 
> Also, we don't need one lli per single byte transfer, we can have single lli to
> do all single byte transfer.
> 
> Signed-off-by: Viresh Kumar <viresh.kumar@...com>
> ---
>  drivers/dma/amba-pl08x.c |   61 +++++++++++++++++++++++++---------------------
>  1 files changed, 33 insertions(+), 28 deletions(-)
> 
> diff --git a/drivers/dma/amba-pl08x.c b/drivers/dma/amba-pl08x.c
> index 3b7357e..590397d 100644
> --- a/drivers/dma/amba-pl08x.c
> +++ b/drivers/dma/amba-pl08x.c
> @@ -552,6 +552,14 @@ static void pl08x_fill_lli_for_desc(struct pl08x_lli_build_data *bd,
>  	bd->remainder -= len;
>  }
>  
> +static inline void prep_byte_width_lli(struct pl08x_lli_build_data *bd,
> +		u32 *cctl, u32 len, int num_llis, size_t *total_bytes)
> +{
> +		*cctl = pl08x_cctl_bits(*cctl, 1, 1, len);
> +		pl08x_fill_lli_for_desc(bd, num_llis, len, *cctl);
> +		(*total_bytes) += len;

Seeing as your patch series started with a cleanup of spacing/tabbing,
it's surprising to find a patch introducing new code which has broken
tabbing.
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