linux-kernel - Re: [PATCH 5/6] dma/imx-sdma: use num_events to validate event

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Date:	Tue, 10 Jan 2012 22:16:55 +0800
From:	Shawn Guo <shawn.guo@...aro.org>
To:	Richard Zhao <richard.zhao@...aro.org>
Cc:	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	dan.j.williams@...el.com, vinod.koul@...el.com,
	kernel@...gutronix.de, eric.miao@...aro.org, patches@...aro.org
Subject: Re: [PATCH 5/6] dma/imx-sdma: use num_events to validate event_id0

On Tue, Jan 10, 2012 at 03:01:49PM +0800, Richard Zhao wrote:
> event number is not always 32. use num_events for checking instead.
> 
> Signed-off-by: Richard Zhao <richard.zhao@...aro.org>

Acked-by: Shawn Guo <shawn.guo@...aro.org>

Regards,
Shawn

> ---
>  drivers/dma/imx-sdma.c |    2 +-
>  1 files changed, 1 insertions(+), 1 deletions(-)
> 
> diff --git a/drivers/dma/imx-sdma.c b/drivers/dma/imx-sdma.c
> index 015d93f..22fd561 100644
> --- a/drivers/dma/imx-sdma.c
> +++ b/drivers/dma/imx-sdma.c
> @@ -723,7 +723,7 @@ static int sdma_config_channel(struct sdma_channel *sdmac)
>  	sdmac->per_addr = 0;
>  
>  	if (sdmac->event_id0) {
> -		if (sdmac->event_id0 > 32)
> +		if (sdmac->event_id0 >= sdmac->sdma->num_events)
>  			return -EINVAL;
>  		sdma_event_enable(sdmac, sdmac->event_id0);
>  	}
> -- 
> 1.7.5.4
> 
> 
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