Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 22bb5cfd authored by Artur Petrosyan's avatar Artur Petrosyan Committed by Felipe Balbi
Browse files

usb: dwc2: Fix host exit from hibernation flow. 



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: default avatarMinas Harutyunyan <hminas@synopsys.com>
Signed-off-by: default avatarArtur Petrosyan <arturp@synopsys.com>
Signed-off-by: default avatarFelipe Balbi <felipe.balbi@linux.intel.com>
parent 9925e6eb

drivers/usb/dwc2/hcd.c

+3 −1
Original line number Diff line number Diff line
@@ -5435,7 +5435,7 @@ 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");



	/*
@@ -5616,6 +5616,8 @@ 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;