Re: btusb_intr_complete returns -EPIPE

From: Naveen Kumar Parna <pnaveenkos@gmail.com>
To: Oliver Neukum <oneukum@suse.de>
Cc: "linux-bluetooth@vger.kernel.org"
	<linux-bluetooth@vger.kernel.org>,
	linux-usb@vger.kernel.org, acho@suse.com
Subject: Re: btusb_intr_complete returns -EPIPE
Date: Tue, 7 Oct 2014 20:01:18 +0530	[thread overview]
Message-ID: <CAG0bkv+YK6_wP+cnZEmfRZnLXa=7N1CMyYqVAbao22gf74dhbw@mail.gmail.com> (raw)
In-Reply-To: <CAG0bkvKYT5+ZBZwdvG71g98CqZR03er6rN4y5RRfq6UUL5KnCw@mail.gmail.com>

> The new patch clears the halt condition.

I mean usb_clear_halt( ) returned zero.

Thanks,

Naveen

On Tue, Oct 7, 2014 at 7:04 PM, Naveen Kumar Parna <pnaveenkos@gmail.com> wrote:
> Thanks for the new patch.
>
>
>
> The new patch clears the halt condition. But after submitting the urb
> again the INT in endpoint returns EPIPE, this behavior continues
> infinitely.
>
>
>
> Corresponding kernel log is here:
>
> Oct  7 17:58:41 naveen-OptiPlex-745 kernel: [   16.311863] hci0 urb
> ffff88012f670b40 status -32 count 0
>
> Oct  7 17:58:41 naveen-OptiPlex-745 kernel: [   16.311988] hci5 urb
> ffff8801379d2180 status -32 count 0
>
> Oct  7 17:58:41 naveen-OptiPlex-745 kernel: [   16.455464] hci4 urb
> ffff88012a4b2e40 status -32 count 0
>
> Oct  7 17:58:41 naveen-OptiPlex-745 kernel: [   16.455586] hci1 urb
> ffff88012a4b2180 status -32 count 0
>
> Oct  7 17:58:41 naveen-OptiPlex-745 kernel: [   16.455691] hci2 urb
> ffff88012f670480 status -32 count 0
>
> Oct  7 17:58:41 naveen-OptiPlex-745 kernel: [   16.455784] hci3 urb
> ffff88012f670e40 status -32 count 0
>
> Oct  7 17:58:41 naveen-OptiPlex-745 kernel: [   16.455853] hci0 urb
> ffff880131e5ee40 status -32 count 0
>
> Oct  7 17:58:41 naveen-OptiPlex-745 kernel: [   16.455913] hci5 urb
> ffff880131e5e780 status -32 count 0
>
> Oct  7 17:58:44 naveen-OptiPlex-745 kernel: [   19.690366] hci4 urb
> ffff880131e5e780 status -32 count 0
>
> Oct  7 17:58:44 naveen-OptiPlex-745 kernel: [   19.690490] hci5 urb
> ffff880131e5e300 status -32 count 0
>
> Oct  7 17:58:47 naveen-OptiPlex-745 kernel: [   22.163163] hci5 urb
> ffff88012f541540 status -32 count 0
>
> Oct  7 18:06:01 naveen-OptiPlex-745 kernel: [   45.313996] hci1 urb
> ffff880131e5ee40 status -32 count 0
>
> Oct  7 18:06:01 naveen-OptiPlex-745 kernel: [   45.314121] hci0 urb
> ffff880131e5e900 status -32 count 0
>
> Oct  7 18:06:01 naveen-OptiPlex-745 kernel: [   45.314169] hci3 urb
> ffff880131e5e3c0 status -32 count 0
>
> Oct  7 18:06:01 naveen-OptiPlex-745 kernel: [   45.314213] hci2 urb
> ffff880131e5ef00 status -32 count 0
>
> Oct  7 18:06:01 naveen-OptiPlex-745 kernel: [   45.314245] hci4 urb
> ffff88012f541d80 status -32 count 0
>
> Oct  7 18:06:01 naveen-OptiPlex-745 kernel: [   45.314274] hci5 urb
> ffff88012f541540 status -32 count 0
>
> Oct  7 18:06:01 naveen-OptiPlex-745 kernel: [   45.319974] hci2 urb
> ffff8801384dcb40 status -32 count 0
>
> Oct  7 18:06:01 naveen-OptiPlex-745 kernel: [   45.320095] hci0 urb
> ffff8801384dc300 status -32 count 0
>
> Oct  7 18:06:01 naveen-OptiPlex-745 kernel: [   45.320151] hci4 urb
> ffff8801384dc6c0 status -32 count 0
>
> Oct  7 18:06:01 naveen-OptiPlex-745 kernel: [   45.320193] hci5 urb
> ffff8801384dcf00 status -32 count 0
>
>
>
> Thanks,
>
> Naveen
>
> On Tue, Oct 7, 2014 at 3:31 PM, Oliver Neukum <oneukum@suse.de> wrote:
>> On Tue, 2014-10-07 at 12:14 +0530, Naveen Kumar Parna wrote:
>>> > +       err = usb_clear_halt(data->udev,
>>> > +                            usb_rcvbulkpipe(data->udev,
>>> > +                                            data->intr_ep->bEndpointAddress));
>>>
>>> EPIPE occurred for INT in endpoint, so we should use usb_rcvintpipe()
>>> instead of usb_rcvbulkpipe() right?
>>
>> Yes. And I noticed a copy and past error.
>>
>>> Does the “lsusb –v” gives any clue about the reason for getting -EPIPE?
>>
>> No. Could you nevertheless test the attached version?
>>
>>         Regards
>>                 Oliver
>>