From: Guiting Shen Date: Mon, 26 Jun 2023 15:27:13 +0000 (+0800) Subject: usb: ohci-at91: Fix the unhandle interrupt when resume X-Git-Tag: v6.5-rc4~3^2~19 X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=c55afcbeaa7a6f4fffdbc999a9bf3f0b29a5186f;p=linux-block.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 Cc: stable Reviewed-by: Alan Stern Link: https://lore.kernel.org/r/20230626152713.18950-1-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 b9ce8d80f20b..b805c4b52ac3 100644 --- a/drivers/usb/host/ohci-at91.c +++ b/drivers/usb/host/ohci-at91.c @@ -672,7 +672,13 @@ 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; }