linux-kernel - Re: [ 12/37] ALSA: hda - Cirrus: Correctly clear line_out

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Date:	Mon, 03 Dec 2012 10:46:59 +0100
From:	David Henningsson <david.henningsson@...onical.com>
To:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
CC:	linux-kernel@...r.kernel.org, stable@...r.kernel.org,
	alan@...rguk.ukuu.org.uk, Takashi Iwai <tiwai@...e.de>
Subject: Re: [ 12/37] ALSA: hda - Cirrus: Correctly clear line_out_pins when
 moving to speaker

On 11/30/2012 07:45 PM, Greg Kroah-Hartman wrote:
> 3.0-stable review patch.  If anyone has any objections, please let me know.
>
> ------------------
>
> From: David Henningsson <david.henningsson@...onical.com>
>
> commit 34c3d1926bdaf45d3a891dd577482abcdd9faa34 upstream.
>
> If this array is not cleared, the jack related code later might
> fail to create "Internal Speaker Phantom Jack" on Dell Inspiron 3420 and
> Dell Vostro 2420.
>
> BugLink: https://bugs.launchpad.net/bugs/1076840
> Signed-off-by: David Henningsson <david.henningsson@...onical.com>
> Signed-off-by: Takashi Iwai <tiwai@...e.de>
> Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
>
> ---
>   sound/pci/hda/patch_cirrus.c |    1 +
>   1 file changed, 1 insertion(+)
>
> --- a/sound/pci/hda/patch_cirrus.c
> +++ b/sound/pci/hda/patch_cirrus.c
> @@ -413,6 +413,7 @@ static int parse_output(struct hda_codec
>   		memcpy(cfg->speaker_pins, cfg->line_out_pins,
>   		       sizeof(cfg->speaker_pins));
>   		cfg->line_outs = 0;
> +		memset(cfg->line_out_pins, 0, sizeof(cfg->line_out_pins));
>   	}
>
>   	return 0;
>
>

This one was originally targeted for 3.6+ (as mentioned in my original 
patch), for earlier kernels I don't anticipate it having any effect, 
neither positive nor negative. Your call.


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