From: Artur Petrosyan Date: Wed, 23 May 2018 13:26:08 +0000 (-0400) Subject: usb: dwc2: Fix host exit from hibernation flow. X-Git-Tag: v4.17.19~273 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b64f38524d691224fb0caaf843c2da1efc980dc1;p=thirdparty%2Fkernel%2Fstable.git usb: dwc2: Fix host exit from hibernation flow. [ Upstream commit 22bb5cfdf13ae70c6a34508a16cfeee48f162443 ] In case when a hub is connected to DWC2 host auto suspend occurs and host goes to hibernation. When any device connected to hub host hibernation exiting incorrectly. - Added dwc2_hcd_rem_wakeup() function call to exit from suspend state by remote wakeup. - Increase timeout value for port suspend bit to be set. Acked-by: Minas Harutyunyan Signed-off-by: Artur Petrosyan Signed-off-by: Felipe Balbi Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/usb/dwc2/hcd.c b/drivers/usb/dwc2/hcd.c index 3a5f0005fae50..779a5145eaf34 100644 --- a/drivers/usb/dwc2/hcd.c +++ b/drivers/usb/dwc2/hcd.c @@ -5437,7 +5437,7 @@ int dwc2_host_enter_hibernation(struct dwc2_hsotg *hsotg) dwc2_writel(hprt0, hsotg->regs + HPRT0); /* Wait for the HPRT0.PrtSusp register field to be set */ - if (dwc2_hsotg_wait_bit_set(hsotg, HPRT0, HPRT0_SUSP, 300)) + if (dwc2_hsotg_wait_bit_set(hsotg, HPRT0, HPRT0_SUSP, 3000)) dev_warn(hsotg->dev, "Suspend wasn't generated\n"); /* @@ -5618,6 +5618,8 @@ int dwc2_host_exit_hibernation(struct dwc2_hsotg *hsotg, int rem_wakeup, return ret; } + dwc2_hcd_rem_wakeup(hsotg); + hsotg->hibernated = 0; hsotg->bus_suspended = 0; hsotg->lx_state = DWC2_L0;