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Commit d724554f authored by Andre Przywara's avatar Andre Przywara Committed by Greg Kroah-Hartman
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net: axienet: Check for DMA mapping errors



[ Upstream commit 71791dc8bdea55eeb2a0caefe98a0b7450c6e0af ]

Especially with the default 32-bit DMA mask, DMA buffers are a limited
resource, so their allocation can fail.
So as the DMA API documentation requires, add error checking code after
dma_map_single() calls to catch the case where we run out of "low" memory.

Signed-off-by: default avatarAndre Przywara <andre.przywara@arm.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
Stable-dep-of: 9ff2f816e2aa ("net: axienet: Fix register defines comment description")
Signed-off-by: default avatarSasha Levin <sashal@kernel.org>
parent 367ca468
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