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Date: Mon, 22 Oct 2012 06:51:39 +0200 From: Virupax SADASHIVPETIMATH <virupax.sadashivpetimath@...ricsson.com> To: "balbi@...com" <balbi@...com> Cc: "stern@...land.harvard.edu" <stern@...land.harvard.edu>, "linux-usb@...r.kernel.org" <linux-usb@...r.kernel.org>, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, "linus.walleij@...aro.org" <linus.walleij@...aro.org>, Rajaram REGUPATHY <ragupathy.rajaram@...ricsson.com>, Praveena NADAHALLY <praveen.nadahally@...ricsson.com>, Shuai WEN <shuai.wen@...ricsson.com> Subject: RE: [PATCH] usb:musb: Dequeue urbs on device unplug > -----Original Message----- > From: Felipe Balbi [mailto:balbi@...com] > Sent: Monday, October 15, 2012 5:49 PM > To: Virupax SADASHIVPETIMATH > Cc: balbi@...com; stern@...land.harvard.edu; linux-usb@...r.kernel.org; > linux-kernel@...r.kernel.org; linus.walleij@...aro.org; Rajaram REGUPATHY; > Praveena NADAHALLY > Subject: Re: [PATCH] usb:musb: Dequeue urbs on device unplug > > Hi, > > On Wed, Oct 10, 2012 at 10:06:03AM +0530, Virupax Sadashivpetimath wrote: > > Flush queued urbs on receiving device disconnect interrupt. This is > > required for successful disconnect and successive enumeration of the > > device. > > > > In a failure case khubd hangs on usb-storage thread for completion. > > Seen in the below trace. > > > > [ 1355.764526] SysRq : Show Blocked State > > [ 1355.768341] task PC stack pid father > > [ 1355.773620] khubd D c06a1fbc 0 503 2 0x00000000 > > [ 1355.780151] [<c06a1fbc>] (__schedule+0x3f0/0x8ec) from [<c06a26a0>] > > (schedule+0x58/0x70) [ 1355.788330] [<c06a26a0>] (schedule+0x58/0x70) > > from [<c06a2af8>] (schedule_timeout+0x1d8/0x31c) [ 1355.796997] > > [<c06a2af8>] (schedule_timeout+0x1d8/0x31c) from [<c06a1994>] > > (wait_for_common+0xd8/0x180) [ 1355.806396] [<c06a1994>] > > (wait_for_common+0xd8/0x180) from [<c06a1b14>] > > (wait_for_completion+0x20/0x24) [ 1355.815887] [<c06a1b14>] > I would like to get some Tested-bys here. Can you please add Tested-by: <shuai.wen@...ricsson.com> Thanks Virupax S -- 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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