linux-kernel - Re: [ 093/153] ALSA: hda - hdmi: Make jacks phantom, if theyre not detectable

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Date:	Mon, 04 Mar 2013 08:55:44 +0100
From:	David Henningsson <david.henningsson@...onical.com>
To:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
CC:	Ben Hutchings <ben@...adent.org.uk>, stable@...r.kernel.org,
	akpm@...ux-foundation.org, LKML <linux-kernel@...r.kernel.org>,
	Takashi Iwai <tiwai@...e.de>
Subject: Re: [ 093/153] ALSA: hda - hdmi: Make jacks phantom, if theyre not
 detectable

On 03/04/2013 08:48 AM, Greg Kroah-Hartman wrote:
> On Mon, Mar 04, 2013 at 08:46:16AM +0100, David Henningsson wrote:
>> On 03/04/2013 06:13 AM, Ben Hutchings wrote:
>>> On Mon, 2013-03-04 at 03:38 +0000, Ben Hutchings wrote:
>>>> 3.2-stable review patch.  If anyone has any objections, please let me know.
>>>>
>>>> ------------------
>>>>
>>>> From: David Henningsson <david.henningsson@...onical.com>
>>>>
>>>> commit 30efd8debd1ef30be342d374f01e993509f5b76b upstream.
>>>>
>>>> Just as for analog codecs, a jack that isn't suitable for detection
>>>> (in this case, NO_PRESENCE was set) should be a phantom Jack
>>>> instead of a normal one.
>>>>
>>>> Thanks to Raymond Yau for spotting.
>>>>
>>>> BugLink: https://bugs.launchpad.net/bugs/961286
>>>> BugLink: https://bugzilla.redhat.com/show_bug.cgi?id=903869
>>>> Signed-off-by: David Henningsson <david.henningsson@...onical.com>
>>>> Signed-off-by: Takashi Iwai <tiwai@...e.de>
>>>> [bwh: Backported to 3.2: adjust context]
>>>> Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
>>>
>>> David, do I need to change this further for 3.2.y?
>>
>> Greg and Ben,
>>
>> Given some thought, the definition of is_jack_detectable has
>> changed/improved over kernels. Therefore I think it's safer not to
>> apply the patch at all for kernels earlier than 3.6. Let's revisit
>> this decision if there's actually a user demand for this fix.
>
> So should I revert this in the next 3.4 release, as it's now in the
> 3.4.35 release.

That seems to be the safest option; given that we don't get people with 
the actual hardware to test the different options and report back which 
one works best.

Sorry for the late reply.

-- 
David Henningsson, Canonical Ltd.
https://launchpad.net/~diwic
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