linux-kernel - Re: [BUGFIX v2 0/4] fix bug 56531, 59501 and 59581

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Message-ID: <CAN_LGv1itN=ADE-3LNCoBJFXmpWZffhQb6NQuoBzvONkX3brug@mail.gmail.com>
Date:	Sat, 15 Jun 2013 12:42:50 +0600
From:	"Alexander E. Patrakov" <patrakov@...il.com>
To:	Jiang Liu <jiang.liu@...wei.com>, alexdeucher@...il.com
Cc:	"Rafael J . Wysocki" <rjw@...k.pl>,
	Bjorn Helgaas <bhelgaas@...gle.com>,
	Yinghai Lu <yinghai@...nel.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Yijing Wang <wangyijing@...wei.com>,
	linux-acpi@...r.kernel.org, Jiang Liu <liuj97@...il.com>,
	"linux-pci@...r.kernel.org" <linux-pci@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [BUGFIX v2 0/4] fix bug 56531, 59501 and 59581

2013/6/15 Jiang Liu <jiang.liu@...wei.com>:
> Alexander E. Patrakov <patrakov@...il.com> reports two bugs related to
> dock station support on Sony VAIO VPCZ23A4R. Actually there are at least
> four bugs related to Sony VAIO VPCZ23A4R dock support.
> 1) can't correctly detect hotplug slot for dock state
> 2) resource leak on undocking
> 3) resource allocation failure for dock devices
> 4) one bug in intel_snd_hda driver
5) one or two bugs in radeon driver

As for the subject - only a hotplug-related part of bug 59581 is fixed.

> Hi Alexander, could you please help to test the whole patchset?
> Really get sleepy, it's already 3 oclock now, so please forgive me
> if there any stupid mistakes.

I have tested this patchset on top of 3.10-rc5 using the following two
testcases.

1. Boot docked with radeon blacklisted. Switch to text-based virtual
console, undock, dock, modprobe radeon, rmmod radeon, undock, dock,
modprobe radeon again. Tested in this sequence because Alex Deucher
told me in bug 59681 to rmmod radeon before undocking.

2. Boot undocked, with radeon not blacklisted. Stay in X. Dock,
undock, dock, undock, dock.

Both cases work, and exhibit similar backtraces in dmesg. So I am
attaching a dmesg only from the first testcase. Please look for "INFO:
trying to register non-static key" and for "*ERROR* Memory manager not
clean. Delaying takedown". I understand that the second trace is
unrelated to this patchset, but would like you to fix the first.

Note that the snd_hda_intel bug somehow didn't manifest itself today,
probably because the TV that is connected to the HDMI output of the
radeon card was off and because Xorg never really tried to use the
card.

--
Alexander E. Patrakov

View attachment "dmesg.txt" of type "text/plain" (101148 bytes)