From: Douglas Anderson <dianders@chromium.org> stable inclusion from stable-v6.6.7 commit 9b4a883854355e822f727ac4777b9170a62bac18 category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I8SSQ4 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=... -------------------------------- [ Upstream commit 79321a793945fdbff2f405f84712d0ab81bed287 ] Delay loops in r8152 should break out if RTL8152_INACCESSIBLE is set so that they don't delay too long if the device becomes inaccessible. Add the break to the loop in r8153_aldps_en(). Fixes: 4214cc550bf9 ("r8152: check if disabling ALDPS is finished") Reviewed-by: Grant Grundler <grundler@chromium.org> Signed-off-by: Douglas Anderson <dianders@chromium.org> Acked-by: Hayes Wang <hayeswang@realtek.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Sasha Levin <sashal@kernel.org> Signed-off-by: Zheng Zengkai <zhengzengkai@huawei.com> --- drivers/net/usb/r8152.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/net/usb/r8152.c b/drivers/net/usb/r8152.c index 4393ffd3b294..7611c406fdb9 100644 --- a/drivers/net/usb/r8152.c +++ b/drivers/net/usb/r8152.c @@ -5770,6 +5770,8 @@ static void r8153_aldps_en(struct r8152 *tp, bool enable) data &= ~EN_ALDPS; ocp_reg_write(tp, OCP_POWER_CFG, data); for (i = 0; i < 20; i++) { + if (test_bit(RTL8152_INACCESSIBLE, &tp->flags)) + return; usleep_range(1000, 2000); if (ocp_read_word(tp, MCU_TYPE_PLA, 0xe000) & 0x0100) break; -- 2.20.1