Hi, I'm doing some usb driver development work and running into an issue where my urb completion handler is not being called to give my driver back the urb/buffer. This issue occurs randomly, ie it'll happen anywhere w/in 5 minutes to over 4 hours. With the kernel dynamic debugging enabled for the usbcore and xhci_hcd modules, I see that the urb I submit to the usbcore appears to be mapped to the hcd's dma for transfer, but the xhci_irq never gets called to give the driver back the urb. Unfortunately, it results in my application being timed out eventually because any urbs I submit after this happens appears to not be sent to the usb wire according to usb protocol analyzer logs. This is with sending messages to my Control EP, with very low traffic. Could this be an issue with the usb controller that I'm using on my device? Can someone help me understand under what conditions should the xhci_irq/interrupt occur? Thanks, Jay -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
