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| author |   Christoph Hellwig <hch@lst.de> | 2017-05-21 12:54:31 +0200 |
|---|---|---|
| committer | Christoph Hellwig <hch@lst.de> | 2017-06-20 11:12:56 +0200 |
| commit | e4734b3f5ffc42d821a316383222d71dce7d5c9e (patch) | |
| tree | e446a32f8830b2a1c0749c01997b7af21a89d4c8 /drivers/dma | |
| parent | ibmveth: properly unwind on init errors (diff) | |
| download | wireguard-linux-e4734b3f5ffc42d821a316383222d71dce7d5c9e.tar.xz wireguard-linux-e4734b3f5ffc42d821a316383222d71dce7d5c9e.zip | |
dmaengine: ioat: don't use DMA_ERROR_CODE
DMA_ERROR_CODE is not a public API and will go away. Instead properly
unwind based on the loop counter.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Dave Jiang <dave.jiang@intel.com>
Acked-By: Vinod Koul <vinod.koul@intel.com>
Diffstat (limited to 'drivers/dma')
| -rw-r--r-- | drivers/dma/ioat/init.c | 24 |
1 files changed, 7 insertions, 17 deletions
diff --git a/drivers/dma/ioat/init.c b/drivers/dma/ioat/init.c index 6ad4384b3fa8..ed8ed1192775 100644 --- a/drivers/dma/ioat/init.c +++ b/drivers/dma/ioat/init.c @@ -839,8 +839,6 @@ static int ioat_xor_val_self_test(struct ioatdma_device *ioat_dma) goto free_resources; } - for (i = 0; i < IOAT_NUM_SRC_TEST; i++) - dma_srcs[i] = DMA_ERROR_CODE; for (i = 0; i < IOAT_NUM_SRC_TEST; i++) { dma_srcs[i] = dma_map_page(dev, xor_srcs[i], 0, PAGE_SIZE, DMA_TO_DEVICE); @@ -910,8 +908,6 @@ static int ioat_xor_val_self_test(struct ioatdma_device *ioat_dma) xor_val_result = 1; - for (i = 0; i < IOAT_NUM_SRC_TEST + 1; i++) - dma_srcs[i] = DMA_ERROR_CODE; for (i = 0; i < IOAT_NUM_SRC_TEST + 1; i++) { dma_srcs[i] = dma_map_page(dev, xor_val_srcs[i], 0, PAGE_SIZE, DMA_TO_DEVICE); @@ -965,8 +961,6 @@ static int ioat_xor_val_self_test(struct ioatdma_device *ioat_dma) op = IOAT_OP_XOR_VAL; xor_val_result = 0; - for (i = 0; i < IOAT_NUM_SRC_TEST + 1; i++) - dma_srcs[i] = DMA_ERROR_CODE; for (i = 0; i < IOAT_NUM_SRC_TEST + 1; i++) { dma_srcs[i] = dma_map_page(dev, xor_val_srcs[i], 0, PAGE_SIZE, DMA_TO_DEVICE); @@ -1017,18 +1011,14 @@ static int ioat_xor_val_self_test(struct ioatdma_device *ioat_dma) goto free_resources; dma_unmap: if (op == IOAT_OP_XOR) { - if (dest_dma != DMA_ERROR_CODE) - dma_unmap_page(dev, dest_dma, PAGE_SIZE, - DMA_FROM_DEVICE); - for (i = 0; i < IOAT_NUM_SRC_TEST; i++) - if (dma_srcs[i] != DMA_ERROR_CODE) - dma_unmap_page(dev, dma_srcs[i], PAGE_SIZE, - DMA_TO_DEVICE); + while (--i >= 0) + dma_unmap_page(dev, dma_srcs[i], PAGE_SIZE, + DMA_TO_DEVICE); + dma_unmap_page(dev, dest_dma, PAGE_SIZE, DMA_FROM_DEVICE); } else if (op == IOAT_OP_XOR_VAL) { - for (i = 0; i < IOAT_NUM_SRC_TEST + 1; i++) - if (dma_srcs[i] != DMA_ERROR_CODE) - dma_unmap_page(dev, dma_srcs[i], PAGE_SIZE, - DMA_TO_DEVICE); + while (--i >= 0) + dma_unmap_page(dev, dma_srcs[i], PAGE_SIZE, + DMA_TO_DEVICE); } free_resources: dma->device_free_chan_resources(dma_chan); |