From: Jiri Slaby <jslaby@suse.cz>
To: pingc@wacom.com
Cc: Dmitry Torokhov <dtor@mail.ru>,
linux-input@vger.kernel.org,
Linux kernel mailing list <linux-kernel@vger.kernel.org>,
linux-pm <linux-pm@lists.linux-foundation.org>
Subject: wacom + runtime PM = AA deadlock
Date: Mon, 13 Sep 2010 14:24:45 +0200 [thread overview]
Message-ID: <4C8E180D.4020309@suse.cz> (raw)
Hi,
by mistake when runtime PM is enabled by default for input devices, X
hangs on wacom open:
[<ffffffff814a00ea>] mutex_lock+0x1a/0x40
[<ffffffffa02bc94b>] wacom_resume+0x3b/0x90 [wacom]
[<ffffffff81327a32>] usb_resume_interface+0xd2/0x190
[<ffffffff81327b5d>] usb_resume_both+0x6d/0x110
[<ffffffff81327c24>] usb_runtime_resume+0x24/0x40
[<ffffffff8130a2cf>] __pm_runtime_resume+0x26f/0x450
[<ffffffff8130a23a>] __pm_runtime_resume+0x1da/0x450
[<ffffffff8130a53a>] pm_runtime_resume+0x2a/0x50
[<ffffffff81328176>] usb_autopm_get_interface+0x26/0x60
[<ffffffffa02bc626>] wacom_open+0x36/0x90 [wacom]
wacom_open took wacom->lock and calls usb_autopm_get_interface which in
turn calls wacom_resume which tries to aquire the lock again.
More details (dmesg including) at:
https://bugzilla.novell.com/show_bug.cgi?id=638506
Any ideas how to fix that properly?
thanks,
--
js
suse labs
next reply other threads:[~2010-09-13 12:24 UTC|newest]
Thread overview: 52+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-09-13 12:24 Jiri Slaby [this message]
2010-09-13 14:25 ` [linux-pm] wacom + runtime PM = AA deadlock Alan Stern
2010-09-13 14:25 ` Alan Stern
2010-09-13 14:25 ` Alan Stern
2010-09-13 14:56 ` Oliver Neukum
2010-09-13 15:17 ` Alan Stern
2010-09-13 15:17 ` [linux-pm] " Alan Stern
2010-09-13 15:17 ` Alan Stern
2010-09-13 19:05 ` Oliver Neukum
2010-09-13 20:02 ` Alan Stern
2010-09-13 20:02 ` Alan Stern
2010-09-13 20:28 ` Dmitry Torokhov
2010-09-13 20:28 ` [linux-pm] " Dmitry Torokhov
2010-09-14 8:13 ` Oliver Neukum
2010-09-14 14:01 ` Alan Stern
2010-09-14 14:01 ` [linux-pm] " Alan Stern
2010-09-14 14:01 ` Alan Stern
2010-09-14 14:03 ` Oliver Neukum
2010-09-14 15:23 ` Alan Stern
2010-09-14 15:23 ` Alan Stern
2010-09-14 15:30 ` Oliver Neukum
2010-09-14 15:30 ` [linux-pm] " Oliver Neukum
2010-09-14 16:05 ` Alan Stern
2010-09-14 16:05 ` Alan Stern
2010-09-14 16:05 ` Alan Stern
2010-09-14 15:23 ` Alan Stern
2010-09-14 14:03 ` Oliver Neukum
2010-09-14 8:13 ` Oliver Neukum
2010-09-13 20:02 ` Alan Stern
2010-09-13 19:05 ` Oliver Neukum
2010-09-13 17:10 ` Dmitry Torokhov
2010-09-13 19:20 ` Oliver Neukum
2010-09-13 19:20 ` [linux-pm] " Oliver Neukum
2010-09-14 0:52 ` Dmitry Torokhov
2010-09-14 0:52 ` [linux-pm] " Dmitry Torokhov
2010-09-14 6:07 ` Oliver Neukum
2010-10-04 16:13 ` Dmitry Torokhov
2010-10-04 16:13 ` [linux-pm] " Dmitry Torokhov
2010-10-04 18:33 ` Oliver Neukum
2010-10-04 18:33 ` [linux-pm] " Oliver Neukum
2010-10-04 18:38 ` Dmitry Torokhov
2010-10-04 18:38 ` [linux-pm] " Dmitry Torokhov
2010-10-04 19:24 ` Oliver Neukum
2010-10-05 5:41 ` Dmitry Torokhov
2010-10-05 5:54 ` Oliver Neukum
2010-10-05 5:54 ` [linux-pm] " Oliver Neukum
2010-10-05 5:41 ` Dmitry Torokhov
2010-10-04 19:24 ` Oliver Neukum
2010-09-14 6:07 ` Oliver Neukum
2010-09-13 17:10 ` Dmitry Torokhov
2010-09-13 14:56 ` Oliver Neukum
-- strict thread matches above, loose matches on Subject: below --
2010-09-13 12:24 Jiri Slaby
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