bcm63xx_enet: do not write to random DMA channel on BCM6345
commite3e746f522dcec9bc12e9e72f2be172c8605084e
authorJonas Gorski <jonas.gorski@gmail.com>
Sun, 1 Oct 2017 11:02:16 +0000 (1 13:02 +0200)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Sun, 22 Jul 2018 11:43:24 +0000 (22 13:43 +0200)
treed61b27998dc7b845cc6217ac7e310bc1b18cd5cb
parent1bba4e033f39ee0ec3c7f48649e9fe7b9eccb3cd
bcm63xx_enet: do not write to random DMA channel on BCM6345

commit d6213c1f2ad54a964b77471690264ed685718928 upstream.

The DMA controller regs actually point to DMA channel 0, so the write to
ENETDMA_CFG_REG will actually modify a random DMA channel.

Since DMA controller registers do not exist on BCM6345, guard the write
with the usual check for dma_has_sram.

Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Amit Pundir <amit.pundir@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/net/ethernet/broadcom/bcm63xx_enet.c