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| author |   Neil Horman <nhorman@tuxdriver.com> | 2013-07-26 12:47:14 -0400 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2013-07-26 15:43:38 -0700 |
| commit | ebe7fdbaf3e90ea22feade6c9f5e50f42b23b6d8 (patch) | |
| tree | 5db7fdd1cddd343e5775b933d8021127a4eb57e5 /drivers/net/ethernet/atheros/atl1c/atl1c_hw.c | |
| parent | net/tg3: Fix warning from pci_disable_device() (diff) | |
| download | linux-dev-ebe7fdbaf3e90ea22feade6c9f5e50f42b23b6d8.tar.xz linux-dev-ebe7fdbaf3e90ea22feade6c9f5e50f42b23b6d8.zip | |
atl1c: Fix misuse of netdev_alloc_skb in refilling rx ring
atl1c uses netdev_alloc_skb to refill its rx dma ring, but that call makes no
guarantees about the suitability of the memory for use in DMA. As a result
we've gotten reports of atl1c drivers occasionally hanging and needing to be
reset:
https://bugzilla.kernel.org/show_bug.cgi?id=54021
Fix this by modifying the call to use the internal version __netdev_alloc_skb,
where you can set the gfp_mask explicitly to include GFP_DMA.
Tested by two reporters in the above bug, who have the hardware to validate it.
Both report immediate cessation of the problem with this patch
Signed-off-by: Neil Horman <nhorman@tuxdriver.com>
CC: Jay Cliburn <jcliburn@gmail.com>
CC: "David S. Miller" <davem@davemloft.net>
CC: stable@vger.kernel.org
Tested-by: Luis Henriques <luis.henriques@canonical.com>
Tested-by: Vincent Alquier <vincent.alquier@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/atheros/atl1c/atl1c_hw.c')
0 files changed, 0 insertions, 0 deletions