The following reply was made to PR usb/185628; it has been noted by GNATS.

From: Hans Petter Selasky <h...@bitfrost.no>
To: Alex Goncharov <alex_goncharov_...@yahoo.com>, 
 freebsd-usb@FreeBSD.org, freebsd-gnats-sub...@freebsd.org
Cc:  
Subject: Re: usb/185628: usbd_req_re_enumerate set address failed 
USB_ERR_STALLED
 for Seagate USB drives between r259425 and r260321
Date: Sun, 12 Jan 2014 09:08:27 +0100

 On 01/12/14 07:10, Alex Goncharov wrote:
 > The following reply was made to PR usb/185628; it has been noted by GNATS.
 >
 > From: Alex Goncharov <alex_goncharov_...@yahoo.com>
 > To: "freebsd-gnats-sub...@freebsd.org" <freebsd-gnats-sub...@freebsd.org>,
 >    Hans Petter Selasky <h...@bitfrost.no>, freebsd-usb@FreeBSD.org
 > Cc:
 > Subject: Re: usb/185628: usbd_req_re_enumerate set address failed 
 > USB_ERR_STALLED for Seagate USB drives between r259425 and r260321
 > Date: Sat, 11 Jan 2014 21:58:02 -0800 (PST)
 >
 >   --2120775178-1643984294-1389506282=:33519
 >   Content-Type: text/plain; charset=us-ascii
 >
 >   ,-- On Fri, 1/10/14, Hans Petter Selasky <h...@bitfrost.no> wrote:
 >   ,-- On 01/10/14 12:49, Alex Goncharov  wrote:
 >   >> Maybe; but think about the fact correlations: the fact of the two
 >   >> system's upgrade, two identical Seagate units, and  other HDDs being
 >   >> non-stalled.
 >   >
 >   > If you are running EHCI, there has been no changes in the USB stack,
 >
 >   Apparently, there have been; this is what causes the bogus error:
 >
 >   ------------------------------------------------------------------------
 >   r259454 | hselasky | 2013-12-16 03:51:58 -0500 (Mon, 16 Dec 2013) | 11 
 > lines
 >
 >   MFC r244503 and r246565:
 >
 >   Make sure all USB drivers allocate buffer memory
 >   through the USB API and/or busdma.
 >
 >   The following assumptions have been made:
 >   umass - buffers passed from CAM/SCSI layer are OK
 >   network - mbufs are OK.
 >
 >   Some other nits while at it.
 >   ------------------------------------------------------------------------
 >
 >   I am attaching the code difference for the two relevant files
 >
 >   ----------------------------------------
 >   M       sys/dev/usb/storage/ustorage_fs.c
 >   M       sys/dev/usb/usb_msctest.c
 >   ----------------------------------------
 >
 >   in this change set, skipping the irrelevant 'sys/dev/usb/wlan' ones.
 >
 >   Can this be fixed reasonably soon, please? (I miss my HDDs :)
 >
 
 Hi,
 
 Can you do "usbdump -i usbusX -s 65536 -vvv" where is X is the 
 controller unit which the seagate drive attaches to, before and after 
 reverting patch "259454". I need to see what the difference is in the 
 USB level, because patch "259454" should not affect the protocol data 
 only the timing.
 
 --HPS
 
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