net: hns3: revert to old channel when setting new channel num fail

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After setting new channel num, it needs free old ring memory and
allocate new ring memory. If there is no enough memory and allocate
new ring memory fail, the ring may initialize fail. To make sure
the network interface can work normally, driver should revert the
channel to the old configuration.

Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Peng Li 2019-09-11 10:40:34 +08:00 • committed by David S. Miller

parent 4093d1a262

commit 3a5a5f06d4

1 changed files with 37 additions and 14 deletions

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drivers/net/ethernet/hisilicon/hns3/hns3_enet.c

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