stable inclusion
from stable-5.10.20
commit 87f1df93d49f21d446502ec83b963a1ea1183588
bugzilla: 50608

--------------------------------

[ Upstream commit 30b7edc8 ]

Sometimes mailbox commands timeout when the RX data path becomes
unresponsive. This prevents the submission of new mailbox commands to DXIO.
This patch identifies the timeout and resets the RX data path so that the
next message can be submitted properly.

Fixes: 549b32af ("amd-xgbe: Simplify mailbox interface rate change code")
Co-developed-by: NSudheesh Mavila <sudheesh.mavila@amd.com>
Signed-off-by: NSudheesh Mavila <sudheesh.mavila@amd.com>
Signed-off-by: NShyam Sundar S K <Shyam-sundar.S-k@amd.com>
Acked-by: NTom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
Signed-off-by: NSasha Levin <sashal@kernel.org>
Signed-off-by: NChen Jun <chenjun102@huawei.com>
Acked-by: NXie XiuQi <xiexiuqi@huawei.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>