linux-kernel - Re: [PATCH 04/16] Blackfin SPI Driver: use len_in_bytes when we care about the number of bytes transferred

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Date:	Thu, 20 Nov 2008 12:25:28 -0800
From:	David Brownell <david-b@...bell.net>
To:	Bryan Wu <cooloney@...nel.org>
Cc:	spi-devel-general@...ts.sourceforge.net,
	linux-kernel@...r.kernel.org, Mike Frysinger <vapier.adi@...il.com>
Subject: Re: [PATCH 04/16] Blackfin SPI Driver: use len_in_bytes when we care about the number of bytes transferred

On Monday 17 November 2008, Bryan Wu wrote:
> From: Mike Frysinger <vapier.adi@...il.com>
> 
> Use len_in_bytes when we care about the number of bytes transferred
> rather than the number of spi transactions. (this value will be the
> same for 8bit transfers, but not any other sizes)
> 
> Signed-off-by: Mike Frysinger <vapier.adi@...il.com>
> Signed-off-by: Bryan Wu <cooloney@...nel.org>

Acked-by: David Brownell <dbrownell@...rs.sourceforge.net>


> ---
>  drivers/spi/spi_bfin5xx.c |    6 +++---
>  1 files changed, 3 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/spi/spi_bfin5xx.c b/drivers/spi/spi_bfin5xx.c
> index 6c5671e..cc415e8 100644
> --- a/drivers/spi/spi_bfin5xx.c
> +++ b/drivers/spi/spi_bfin5xx.c
> @@ -803,7 +803,7 @@ static void pump_transfers(unsigned long data)
>  			if (bfin_addr_dcachable((unsigned long) drv_data->rx))
>  				invalidate_dcache_range((unsigned long) drv_data->rx,
>  							(unsigned long) (drv_data->rx +
> -							drv_data->len));
> +							drv_data->len_in_bytes));
>  
>  			/* clear tx reg soformer data is not shifted out */
>  			write_TDBR(drv_data, 0xFFFF);
> @@ -829,7 +829,7 @@ static void pump_transfers(unsigned long data)
>  			if (bfin_addr_dcachable((unsigned long) drv_data->tx))
>  				flush_dcache_range((unsigned long) drv_data->tx,
>  						(unsigned long) (drv_data->tx +
> -						drv_data->len));
> +						drv_data->len_in_bytes));
>  
>  			/* start dma */
>  			dma_enable_irq(drv_data->dma_channel);
> @@ -892,7 +892,7 @@ static void pump_transfers(unsigned long data)
>  			message->state = ERROR_STATE;
>  		} else {
>  			/* Update total byte transfered */
> -			message->actual_length += drv_data->len;
> +			message->actual_length += drv_data->len_in_bytes;
>  
>  			/* Move to next transfer of this msg */
>  			message->state = next_transfer(drv_data);
> -- 
> 1.5.6.3
> 
> 


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