Re: [PATCH] dma: mmp-pdma: fix irq handler overwrite physical chan issue

[Zhangfei Gao]

On 4 February 2015 at 14:16, Qiao Zhou <zhouqiao@xxxxxxxxxxx> wrote:
> Some dma channels may be reserved for other purpose in other layer,
> like secure driver in EL2/EL3. PDMA driver can see the interrupt
> status, but it should not try to handle related interrupt, since it
> doesn't belong to PDMA driver in kernel. These interrupts should be
> handled by corresponding client/module.Otherwise, it will overwrite
> illegal memory and cause unexpected issues, since pdma driver only
> requests resources for pdma channels.
>
> In PDMA driver, the reserved channels are at the end of total 32
> channels. If we find interrupt bit index is not smaller than total
> dma channels, we should ignore it.
>
> Signed-off-by: Qiao Zhou <zhouqiao@xxxxxxxxxxx>

Acked-by: Zhangfei Gao <zhangfei.gao@xxxxxxxxxx>

Thanks for the patch.
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