aboutsummaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorGuiting Shen <[email protected]>2023-06-26 23:27:13 +0800
committerGreg Kroah-Hartman <[email protected]>2023-07-25 17:39:10 +0200
commitc55afcbeaa7a6f4fffdbc999a9bf3f0b29a5186f (patch)
treef7d869a38fc0f19ac69c496846692a32ee35be11
parent13e098b58b8ff6d17f98f459dcc23ff064818e80 (diff)
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 <[email protected]> Cc: stable <[email protected]> Reviewed-by: Alan Stern <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
-rw-r--r--drivers/usb/host/ohci-at91.c8
1 files changed, 7 insertions, 1 deletions
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;
}