[PATCH 5.15 117/155] usb: ohci-at91: Fix the unhandle interrupt when resume

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From: Guiting Shen <aarongt.shen@xxxxxxxxx>

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@xxxxxxxxx>
Cc: stable <stable@xxxxxxxxxx>
Reviewed-by: Alan Stern <stern@xxxxxxxxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20230626152713.18950-1-aarongt.shen@xxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 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
@@ -652,7 +652,13 @@ 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;
 }





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