On 09/29/2015 01:08 PM, Mian Yousaf Kaukab wrote:
From: Gregory Herrero <gregory.herrero@xxxxxxxxx>
Frame number is reset in hardware after exiting hibernation.
Thus, reset frame_number and ensure qh are queued with correct
sched_frame.
Otherwise, qh->sched_frame may be too high compared to
current frame number (which is 0). This can delay addition of qh in
the list of transfers until frame number reaches qh->sched_frame.
Signed-off-by: Gregory Herrero <gregory.herrero@xxxxxxxxx>
Signed-off-by: Mian Yousaf Kaukab <yousaf.kaukab@xxxxxxxxx>
Tested-by: Robert Baldyga <r.baldyga@xxxxxxxxxxx>
Tested-by: Dinh Nguyen <dinguyen@xxxxxxxxxxxxxxxxxxxxx>
Tested-by: John Youn <johnyoun@xxxxxxxxxxxx>
Acked-by: John Youn <johnyoun@xxxxxxxxxxxx>
[...]
diff --git a/drivers/usb/dwc2/hcd_queue.c b/drivers/usb/dwc2/hcd_queue.c
index 712977f..801bd9d 100644
--- a/drivers/usb/dwc2/hcd_queue.c
+++ b/drivers/usb/dwc2/hcd_queue.c
@@ -583,6 +583,14 @@ int dwc2_hcd_qh_add(struct dwc2_hsotg *hsotg, struct dwc2_qh *qh)
/* QH already in a schedule */
return 0;
+ if (!dwc2_frame_num_le(qh->sched_frame, hsotg->frame_number) &&
+ !hsotg->frame_number) {
+ dev_dbg(hsotg->dev,
+ "reset frame number counter\n");
Would the dev_dbg() line indeed exceed 80 columns?
[...]
MBR, Sergei
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