Messages in this thread | | | Date | Fri, 24 Jul 2009 13:55:42 +0300 | From | Tarkan Erimer <> | Subject | [BISECTED] Re: [BUG] Linux-2.6.31-rc1 Fails To Recognize Some USB Disks |
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On 06/29/2009 05:30 PM, Martin K. Petersen wrote: > Tarkan> version=0x00 [no conformance claimed] > > Wow, that's super lame. And somewhat odd because WDC are usually pretty > good at USB-SATA bridge protocol compliance. But in any case this is > unrelated to your problems. > > My concern was that our recent changes to the capacity detection in SCSI > failed for your device. However, given your attached log it looks like > it's a USB issue. And rereading your original log it also looks like > you had a USB timeout which coincided with READ CAPACITY failing. > > So I'm deferring to the USB folks. > > Tarkan> [160848.805027] usb 5-8: reset high speed USB device using > Tarkan> ehci_hcd and address 7 > >
Martin,
Today, I had time to bisect and you were right: The below commit related to capacity detection changes in SCSI subsystem,as you mentioned, seems the cause of the problem.
3821d768912a47ddbd6cab52943a8284df88003c is first bad commit commit 3821d768912a47ddbd6cab52943a8284df88003c Author: Martin K. Petersen <martin.petersen@oracle.com> Date: Sat May 23 11:43:38 2009 -0400
sd: Detect non-rotational devices
Detect non-rotational devices and set the queue flag accordingly.
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
:040000 040000 f744f08d73f56e6d8461267c8c5bc4c710d4c9dd 89eb1f56a7066a22a9ae6b7b916453a78a9dd082 M drivers
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