From: Guiting Shen aarongt.shen@gmail.com
commit c55afcbeaa7a6f4fffdbc999a9bf3f0b29a5186f upstream.
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 aarongt.shen@gmail.com Cc: stable stable@kernel.org Reviewed-by: Alan Stern stern@rowland.harvard.edu Link: https://lore.kernel.org/r/20230626152713.18950-1-aarongt.shen@gmail.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/usb/host/ohci-at91.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-)
--- a/drivers/usb/host/ohci-at91.c +++ b/drivers/usb/host/ohci-at91.c @@ -647,7 +647,13 @@ ohci_hcd_at91_drv_resume(struct device * 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; }