This patch (as1538) causes uhci_hub_status_data() to return a nonzero
value when any port is undergoing a resume transition while the root
hub is suspended. This will allow usbcore to handle races between
root-hub suspend and port wakeup.
Signed-off-by: Alan Stern <stern@xxxxxxxxxxxxxxxxxxx>
CC: <stable@xxxxxxxxxxxxxxx>
---
drivers/usb/host/uhci-hub.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
Index: usb-3.3/drivers/usb/host/uhci-hub.c
===================================================================
--- usb-3.3.orig/drivers/usb/host/uhci-hub.c
+++ usb-3.3/drivers/usb/host/uhci-hub.c
@@ -196,11 +196,12 @@ static int uhci_hub_status_data(struct u
status = get_hub_status_data(uhci, buf);
switch (uhci->rh_state) {
- case UHCI_RH_SUSPENDING:
case UHCI_RH_SUSPENDED:
/* if port change, ask to be resumed */
- if (status || uhci->resuming_ports)
+ if (status || uhci->resuming_ports) {
+ status = 1;
usb_hcd_resume_root_hub(hcd);
+ }
break;
case UHCI_RH_AUTO_STOPPED:
--
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