From 6b42f72eb496191a54289524fd7fe784311cb19a Mon Sep 17 00:00:00 2001 From: hayeswang Date: Tue, 13 Jun 2017 15:14:40 +0800 Subject: [PATCH] r8152: move calling delay_autosuspend function Move calling delay_autosuspend() in rtl8152_runtime_suspend(). Calling delay_autosuspend() as late as possible. The original flows are 1. check if the driver/device is busy now. 2. set wake events. 3. enter runtime suspend. If the wake event occurs between (1) and (2), the device may miss it. Besides, to avoid the runtime resume occurs after runtime suspend immediately, move the checking to the end of rtl8152_runtime_suspend(). Signed-off-by: Hayes Wang Signed-off-by: David S. Miller --- drivers/net/usb/r8152.c | 12 +++++------- 1 file changed, 5 insertions(+), 7 deletions(-) diff --git a/drivers/net/usb/r8152.c b/drivers/net/usb/r8152.c index c7663e10707cd..8bc4573e0cd49 100644 --- a/drivers/net/usb/r8152.c +++ b/drivers/net/usb/r8152.c @@ -4355,13 +4355,6 @@ static int rtl8152_runtime_suspend(struct r8152 *tp) if (netif_running(netdev) && test_bit(WORK_ENABLE, &tp->flags)) { u32 rcr = 0; - if (delay_autosuspend(tp)) { - clear_bit(SELECTIVE_SUSPEND, &tp->flags); - smp_mb__after_atomic(); - ret = -EBUSY; - goto out1; - } - if (netif_carrier_ok(netdev)) { u32 ocp_data; @@ -4395,6 +4388,11 @@ static int rtl8152_runtime_suspend(struct r8152 *tp) ocp_write_dword(tp, MCU_TYPE_PLA, PLA_RCR, rcr); napi_enable(napi); } + + if (delay_autosuspend(tp)) { + rtl8152_runtime_resume(tp); + ret = -EBUSY; + } } out1: -- 2.39.5