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cb216b84d6
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:
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.. | ||
coherent.c | ||
contiguous.c | ||
debug.c | ||
direct.c | ||
Kconfig | ||
Makefile | ||
mapping.c | ||
swiotlb.c | ||
virt.c |