OSDN Git Service

(root) / uclinux-h8 / linux.git / commit
? search:
summary | shortlog | log | commit | commitdiff | tree
(parent: ab365c3) | patch
net: axienet: Check for DMA mapping errors
authorAndre Przywara <andre.przywara@arm.com>
Tue, 24 Mar 2020 13:23:40 +0000 (13:23 +0000)
committerDavid S. Miller <davem@davemloft.net>
Tue, 24 Mar 2020 23:33:04 +0000 (16:33 -0700)
commit71791dc8bdea55eeb2a0caefe98a0b7450c6e0af
treebf079aae1a3707d2cd2b95ffc9a5c76f878d3f3atree | snapshot
parentab365c3393664f32116aa22fe322cb04a93fab31commit | diff
net: axienet: Check for DMA mapping errors

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: Andre Przywara <andre.przywara@arm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
drivers/net/ethernet/xilinx/xilinx_axienet_main.c diff | blob | history
About OSDN
Find Software
Develop Software
Help