Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wirel...

[linux-drm-fsl-dcu.git] / drivers / dma / ioat / dma.c

diff --git a/drivers/dma/ioat/dma.c b/drivers/dma/ioat/dma.c
index 1a49c777607c50d313482f3ead21c19572a1cf8d..87529181efccb9851467cc04be04bd91fecb15b3 100644 (file)
--- a/drivers/dma/ioat/dma.c
+++ b/drivers/dma/ioat/dma.c
@@ -817,7 +817,15 @@ int ioat_dma_self_test(struct ioatdma_device *device)
        }
 
        dma_src = dma_map_single(dev, src, IOAT_TEST_SIZE, DMA_TO_DEVICE);
+       if (dma_mapping_error(dev, dma_src)) {
+               dev_err(dev, "mapping src buffer failed\n");
+               goto free_resources;
+       }
        dma_dest = dma_map_single(dev, dest, IOAT_TEST_SIZE, DMA_FROM_DEVICE);
+       if (dma_mapping_error(dev, dma_dest)) {
+               dev_err(dev, "mapping dest buffer failed\n");
+               goto unmap_src;
+       }
        flags = DMA_PREP_INTERRUPT;
        tx = device->common.device_prep_dma_memcpy(dma_chan, dma_dest, dma_src,
                                                   IOAT_TEST_SIZE, flags);
@@ -855,8 +863,9 @@ int ioat_dma_self_test(struct ioatdma_device *device)
        }
 
 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);
+unmap_src:
+       dma_unmap_single(dev, dma_src, IOAT_TEST_SIZE, DMA_TO_DEVICE);
 free_resources:
        dma->device_free_chan_resources(dma_chan);
 out: