}
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);
}
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: