linux-kernel - Re: [PATCH v2 10/14] dma: edma: Simplify direction configuration in edma_config

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Thu, 10 Apr 2014 17:40:05 -0500
From:	Joel Fernandes <joelf@...com>
To:	Peter Ujfalusi <peter.ujfalusi@...com>, <dan.j.williams@...el.com>,
	<vinod.koul@...el.com>, <nsekhar@...com>
CC:	<dmaengine@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>,
	<linux-omap@...r.kernel.org>,
	<davinci-linux-open-source@...ux.davincidsp.com>,
	<mporter@...aro.org>
Subject: Re: [PATCH v2 10/14] dma: edma: Simplify direction configuration
 in edma_config_pset()

On 04/01/2014 08:06 AM, Peter Ujfalusi wrote:
> We only support DEV_TO_MEM or MEM_TO_DEV directions with edma driver and the
> check for the direction has been already done in the function calling
> edma_config_pset().
> The error reporting is redundant and also the "else if ()" can be removed.
> 

NAK. Please don't do this. I have been working on MEM_TO_MEM support as
well so leave it as it is for future.

Thanks,
-Joel

> Signed-off-by: Peter Ujfalusi <peter.ujfalusi@...com>
> ---
>  drivers/dma/edma.c | 6 ++----
>  1 file changed, 2 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/dma/edma.c b/drivers/dma/edma.c
> index 855766672aa9..d954099650ae 100644
> --- a/drivers/dma/edma.c
> +++ b/drivers/dma/edma.c
> @@ -372,14 +372,12 @@ static int edma_config_pset(struct dma_chan *chan, struct edmacc_param *pset,
>  		src_cidx = cidx;
>  		dst_bidx = 0;
>  		dst_cidx = 0;
> -	} else if (direction == DMA_DEV_TO_MEM)  {
> +	} else {
> +		/* DMA_DEV_TO_MEM */
>  		src_bidx = 0;
>  		src_cidx = 0;
>  		dst_bidx = acnt;
>  		dst_cidx = cidx;
> -	} else {
> -		dev_err(dev, "%s: direction not implemented yet\n", __func__);
> -		return -EINVAL;
>  	}
>  
>  	pset->opt = EDMA_TCC(EDMA_CHAN_SLOT(echan->ch_num));
> 

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/