Commit 44950d28 authored Jul 29, 2019 by Jian Shen Committed by David S. Miller Jul 29, 2019

net: hns3: add reset checking before set channels



hns3_set_channels() should check the resetting status firstly,
since the device will reinitialize when resetting. If the
reset has not completed, the hns3_set_channels() may access
invalid memory.

Signed-off-by: Jian Shen <shenjian15@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

parent dda91bd7

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

+3 −0

Original line number	Diff line number	Diff line
		@@ -4378,6 +4378,9 @@ int hns3_set_channels(struct net_device *netdev,
		u16 org_tqp_num;
		int ret;

		if (hns3_nic_resetting(netdev))
		return -EBUSY;

		if (ch->rx_count \|\| ch->tx_count)
		return -EINVAL;

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