From mboxrd@z Thu Jan  1 00:00:00 1970
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Subject: Re: btusb_intr_complete returns -EPIPE
From: Oliver Neukum <oneukum@suse.de>
To: Naveen Kumar Parna <pnaveenkos@gmail.com>
Cc: "linux-bluetooth@vger.kernel.org" <linux-bluetooth@vger.kernel.org>,
	linux-usb@vger.kernel.org
Date: Mon, 06 Oct 2014 14:24:28 +0200
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On Mon, 2014-10-06 at 17:05 +0530, Naveen Kumar Parna wrote:
> These errors will repeat until sending a proper HCI command on the USB
> bus. Again after some time duration same error will repeats.
> 
> The error -32(-EPIPE) says , Endpoint stalled.  For non-control
> endpoints, reset this status with usb_clear_halt().
> 
> But I don’t see the error(-EPIPE) handling code in btusb module. Does
> anyone has the patch for this scenario?

It really shouldn't stall without reason. We need to know which
transfers stall. A usbmon trace would show you.

	Regards
		Oliver