Re: [PATCH] dma-engine: Fix array index out of bounds warning in __get_unmap_pool()

[Dan Williams]

On Mon, Mar 13, 2017 at 2:30 PM, Matthias Kaehlcke <mka@xxxxxxxxxxxx> wrote:
> This fixes the following warning when building with clang and
> CONFIG_DMA_ENGINE_RAID=n :
>
> drivers/dma/dmaengine.c:1102:11: error: array index 2 is past the end of the array (which contains 1 element) [-Werror,-Warray-bounds]
>                 return &unmap_pool[2];
>                         ^          ~
> drivers/dma/dmaengine.c:1083:1: note: array 'unmap_pool' declared here
> static struct dmaengine_unmap_pool unmap_pool[] = {
> ^
> drivers/dma/dmaengine.c:1104:11: error: array index 3 is past the end of the array (which contains 1 element) [-Werror,-Warray-bounds]
>                 return &unmap_pool[3];
>                         ^          ~
> drivers/dma/dmaengine.c:1083:1: note: array 'unmap_pool' declared here
> static struct dmaengine_unmap_pool unmap_pool[] = {
>
> Signed-off-by: Matthias Kaehlcke <mka@xxxxxxxxxxxx>

Reviewed-by: Dan Williams <dan.j.williams@xxxxxxxxx>