net: fec: update dirty_tx even if no skb
authorTroy Kisky <troy.kisky@boundarydevices.com>
Fri, 27 May 2016 20:30:40 +0000 (13:30 -0700)
committerDavid S. Miller <davem@davemloft.net>
Tue, 31 May 2016 18:57:42 +0000 (11:57 -0700)
commit7fafe803749a0c238feb5d38cb4ddee53eca5aa0
treec68eefd3ef61022c2f23498fd8c5aebf7e424c3d
parent308453aa9156a3b8ee382c0949befb507a32b0c1
net: fec: update dirty_tx even if no skb

If dirty_tx isn't updated, then dma_unmap_single
can be called twice.

This fixes a
[   58.420980] ------------[ cut here ]------------
[   58.425667] WARNING: CPU: 0 PID: 377 at /home/schurig/d/mkarm/linux-4.5/lib/dma-debug.c:1096 check_unmap+0x9d0/0xab8()
[   58.436405] fec 2188000.ethernet: DMA-API: device driver tries to free DMA memory it has not allocated [device address=0x0000000000000000] [size=66 bytes]

encountered by Holger

Signed-off-by: Troy Kisky <troy.kisky@boundarydevices.com>
Tested-by: <holgerschurig@gmail.com>
Acked-by: Fugang Duan <fugang.duan@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
drivers/net/ethernet/freescale/fec_main.c