diff options
| author | Guiting Shen <aarongt.shen@gmail.com> | 2023-06-26 18:27:13 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-08-11 12:57:40 +0300 |
| commit | 66a622275a11fb070b4dae3926d3a1a5d9cbecda (patch) | |
| tree | 10f24dbc64fc017dcaccee778613b4ba70e867d9 | |
| parent | 96c433aff5fd427fde29aba18dbec3df60e8c538 (diff) | |
| download | linux-66a622275a11fb070b4dae3926d3a1a5d9cbecda.tar.xz | |
usb: ohci-at91: Fix the unhandle interrupt when resume
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>
| -rw-r--r-- | drivers/usb/host/ohci-at91.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/usb/host/ohci-at91.c b/drivers/usb/host/ohci-at91.c index 99e994fd3d1d..2ba3c1b6ad6d 100644 --- 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 *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; } |