4.17-stable review patch. If anyone has any objections, please let me know.
------------------ From: Artur Petrosyan <[email protected]> [ 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 <[email protected]> Signed-off-by: Artur Petrosyan <[email protected]> Signed-off-by: Felipe Balbi <[email protected]> Signed-off-by: Sasha Levin <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]> --- drivers/usb/dwc2/hcd.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) --- a/drivers/usb/dwc2/hcd.c +++ b/drivers/usb/dwc2/hcd.c @@ -5437,7 +5437,7 @@ int dwc2_host_enter_hibernation(struct d 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 dw return ret; } + dwc2_hcd_rem_wakeup(hsotg); + hsotg->hibernated = 0; hsotg->bus_suspended = 0; hsotg->lx_state = DWC2_L0;
