stable inclusion
from stable-v5.10.137
commit 3bdda8656a1b74879f6b3889133ccc85decb0b3f
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I60PLB

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=3bdda8656a1b74879f6b3889133ccc85decb0b3f

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

commit a7209541 upstream.

For mvebu uart2, error bits are not cleared on buffer read.
This causes interrupt loop and system hang.

Cc: stable@vger.kernel.org
Reviewed-by: NYi Guo <yi.guo@cavium.com>
Reviewed-by: NNadav Haklai <nadavh@marvell.com>
Signed-off-by: NNarendra Hadke <nhadke@marvell.com>
Signed-off-by: NPali Rohár <pali@kernel.org>
Link: https://lore.kernel.org/r/20220726091221.12358-1-pali@kernel.orgSigned-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>
Reviewed-by: NWei Li <liwei391@huawei.com>