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ioat: add missing DMA unmap to ioat_dma_self_test()

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Make ioat_dma_self_test() do DMA unmapping itself and fix handling
of failure cases.

Cc: Dan Williams <djbw@fb.com>
Cc: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Dan Williams <djbw@fb.com>
This commit is contained in:
Bartlomiej Zolnierkiewicz 2012-11-05 10:00:13 +00:00 committed by Vinod Koul
parent 35fa4dbc8c
commit 522d974451
1 changed files with 7 additions and 4 deletions
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11
drivers/dma/ioat/dma.c
View file

@ -833,14 +833,14 @@ int __devinit ioat_dma_self_test(struct ioatdma_device *device)
dma_src = dma_map_single(dev, src, IOAT_TEST_SIZE, DMA_TO_DEVICE);
dma_dest = dma_map_single(dev, dest, IOAT_TEST_SIZE, DMA_FROM_DEVICE);
flags = DMA_COMPL_SRC_UNMAP_SINGLE | DMA_COMPL_DEST_UNMAP_SINGLE |
flags = DMA_COMPL_SKIP_SRC_UNMAP | DMA_COMPL_SKIP_DEST_UNMAP |
DMA_PREP_INTERRUPT;
tx = device->common.device_prep_dma_memcpy(dma_chan, dma_dest, dma_src,
IOAT_TEST_SIZE, flags);
if (!tx) {
dev_err(dev, "Self-test prep failed, disabling\n");
err = -ENODEV;
goto free_resources;
goto unmap_dma;
}
async_tx_ack(tx);
@ -851,7 +851,7 @@ int __devinit ioat_dma_self_test(struct ioatdma_device *device)
if (cookie < 0) {
dev_err(dev, "Self-test setup failed, disabling\n");
err = -ENODEV;
goto free_resources;
goto unmap_dma;
}
dma->device_issue_pending(dma_chan);
@ -862,7 +862,7 @@ int __devinit ioat_dma_self_test(struct ioatdma_device *device)
!= DMA_SUCCESS) {
dev_err(dev, "Self-test copy timed out, disabling\n");
err = -ENODEV;
goto free_resources;
goto unmap_dma;
}
if (memcmp(src, dest, IOAT_TEST_SIZE)) {
dev_err(dev, "Self-test copy failed compare, disabling\n");
@ -870,6 +870,9 @@ int __devinit ioat_dma_self_test(struct ioatdma_device *device)
goto free_resources;
}
unmap_dma:
dma_unmap_single(dev, dma_src, IOAT_TEST_SIZE, DMA_TO_DEVICE);
dma_unmap_single(dev, dma_dest, IOAT_TEST_SIZE, DMA_FROM_DEVICE);
free_resources:
dma->device_free_chan_resources(dma_chan);
out: