From: Matthias Kaehlcke mka@chromium.org
[ Upstream commit 23f963e91fd81f44f6b316b1c24db563354c6be8 ]
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@chromium.org Reviewed-by: Dan Williams dan.j.williams@intel.com Signed-off-by: Vinod Koul vinod.koul@intel.com Signed-off-by: Sasha Levin alexander.levin@verizon.com --- drivers/dma/dmaengine.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/drivers/dma/dmaengine.c b/drivers/dma/dmaengine.c index 6b535262ac5d..3db94e81bc14 100644 --- a/drivers/dma/dmaengine.c +++ b/drivers/dma/dmaengine.c @@ -1107,12 +1107,14 @@ static struct dmaengine_unmap_pool *__get_unmap_pool(int nr) switch (order) { case 0 ... 1: return &unmap_pool[0]; +#if IS_ENABLED(CONFIG_DMA_ENGINE_RAID) case 2 ... 4: return &unmap_pool[1]; case 5 ... 7: return &unmap_pool[2]; case 8: return &unmap_pool[3]; +#endif default: BUG(); return NULL;