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Date: Fri, 27 Jul 2007 10:14:09 -0400 (EDT) From: Alan Stern <stern@...land.harvard.edu> To: Greg KH <gregkh@...e.de>, Oliver Neukum <oliver@...kum.org> cc: USB development list <linux-usb-devel@...ts.sourceforge.net>, Linus Torvalds <torvalds@...ux-foundation.org>, Andrew Morton <akpm@...ux-foundation.org>, Kernel development list <linux-kernel@...r.kernel.org> Subject: Re: [linux-usb-devel] usb-storage autosuspend bug? On Fri, 27 Jul 2007, Oliver Neukum wrote: > Am Donnerstag 26 Juli 2007 schrieb Greg KH: > > Alan and Oliver, was this caused by the autosuspend changes for > > usb-storage? > > The oops itself looks like refcounting. What caused the initial io error > does not become clear from the log. It is possible that the device cannot > stand suspension. But there's no evidence from that. On the contrary, > these devices usually do an unplug/plug cycle, which is not in the log. I don't think it's a refcounting problem. My guess is that the underlying cause is the bug in your urb->status removal patch for usb_start_wait_urb() -- the one I fixed here: http://marc.info/?l=linux-usb-devel&m=118531582013355&w=2 Of course, my guess could be wrong. I haven't tried to recreate Linus's bug with that patch reverted. But with the patch present I was not able to duplicate the bug. Alan Stern - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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