linux_dsm_epyc7002/kernel/dma
Robin Murphy cb216b84d6 swiotlb: Skip cache maintenance on map error
If swiotlb_bounce_page() failed, calling arch_sync_dma_for_device() may
lead to such delights as performing cache maintenance on whatever
address phys_to_virt(SWIOTLB_MAP_ERROR) looks like, which is typically
outside the kernel memory map and goes about as well as expected.

Don't do that.

Fixes: a4a4330db4 ("swiotlb: add support for non-coherent DMA")
Tested-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
2018-11-21 18:47:58 +01:00
..
coherent.c
contiguous.c
debug.c
direct.c
Kconfig
Makefile
mapping.c
swiotlb.c
virt.c