On Tue, 2015-07-28 at 15:36 +0800, Hayes Wang wrote:
> The device reset is necessary if the hw becomes abnormal and stops
> transmitting packets.
You are not the first one to face this problem. Hence there
is a helper:
* usb_queue_reset_device - Reset a USB device from an atomic context
* @iface: USB interface belonging to the device to reset
*
* This function can be used to reset a USB device from an atomic
* context, where usb_reset_device() won't work (as it blocks).
Please use it if you can. Your version for example is buggy.
It will oops if you unplug the device while a reset is scheduled.
Regards
Oliver
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