From: Guiting Shen Date: Fri, 28 Jul 2023 12:06:48 +0000 (+0800) Subject: usb: ohci-at91: Fix the unhandle interrupt when resume X-Git-Tag: v6.6.17~4039^2~81 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=e0f75882521f1416406981299fd99777b5d02dcc;p=platform%2Fkernel%2Flinux-rpi.git usb: ohci-at91: Fix the unhandle interrupt when resume The ohci_hcd_at91_drv_suspend() sets ohci->rh_state to OHCI_RH_HALTED when suspend which will let the ohci_irq() skip the interrupt after resume. And nobody to handle this interrupt. According to the comment in ohci_hcd_at91_drv_suspend(), it need to reset when resume from suspend(MEM) to fix by setting "hibernated" argument of ohci_resume(). Signed-off-by: Guiting Shen Reviewed-by: Alan Stern Link: https://lore.kernel.org/r/20230728120648.5878-1-aarongt.shen@gmail.com Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/usb/host/ohci-at91.c b/drivers/usb/host/ohci-at91.c index dc31a7f..f691cd9 100644 --- a/drivers/usb/host/ohci-at91.c +++ b/drivers/usb/host/ohci-at91.c @@ -669,7 +669,13 @@ ohci_hcd_at91_drv_resume(struct device *dev) else at91_start_clock(ohci_at91); - ohci_resume(hcd, false); + /* + * According to the comment in ohci_hcd_at91_drv_suspend() + * we need to do a reset if the 48Mhz clock was stopped, + * that is, if ohci_at91->wakeup is clear. Tell ohci_resume() + * to reset in this case by setting its "hibernated" flag. + */ + ohci_resume(hcd, !ohci_at91->wakeup); return 0; }