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dmaengine: Fix array index out of bounds warning in __get_unmap_pool()
[ Upstream commit 23f963e91f
]
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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -1107,12 +1107,14 @@ static struct dmaengine_unmap_pool *__get_unmap_pool(int nr)
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switch (order) {
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case 0 ... 1:
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return &unmap_pool[0];
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#if IS_ENABLED(CONFIG_DMA_ENGINE_RAID)
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case 2 ... 4:
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return &unmap_pool[1];
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case 5 ... 7:
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return &unmap_pool[2];
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case 8:
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return &unmap_pool[3];
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#endif
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default:
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BUG();
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return NULL;
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