linux-kernel - Re: [PATCH] ALSA: hda: Fix regression of hdmi eld control created based on invalid pcm

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Date:   Sun, 03 Sep 2017 16:34:05 +0200
From:   Takashi Iwai <tiwai@...e.de>
To:     Wang YanQing <udknight@...il.com>
Cc:     alsa-devel@...a-project.org, linux-kernel@...r.kernel.org,
        libin.yang@...ux.intel.com
Subject: Re: [PATCH] ALSA: hda: Fix regression of hdmi eld control created based on invalid pcm

On Sun, 03 Sep 2017 15:18:49 +0200,
Wang YanQing wrote:
> 
> Commit fb087eaaef72 ("ALSA: hda - hdmi eld control created based on pcm")
> forget to filter out invalid pcm numbers, if there is only one invalid pcm
> number, then this issue causes we create eld control for invalid pcm silently,
> but when there are more than one invalid pcm numbers, then this issue bring
> probe error looks like below dmesg:
> "
> kernel: [    1.647283] snd_hda_intel 0000:00:03.0: bound 0000:00:02.0 (ops 0xc2967540)
> kernel: [    1.651192] snd_hda_intel 0000:00:03.0: Too many HDMI devices
> kernel: [    1.651195] snd_hda_intel 0000:00:03.0: Consider building the kernel with CONFIG_SND_DYNAMIC_MINORS=y
> kernel: [    1.651197] snd_hda_intel 0000:00:03.0: Too many HDMI devices
> kernel: [    1.651199] snd_hda_intel 0000:00:03.0: Consider building the kernel with CONFIG_SND_DYNAMIC_MINORS=y
> kernel: [    1.651201] snd_hda_intel 0000:00:03.0: Too many HDMI devices
> kernel: [    1.651203] snd_hda_intel 0000:00:03.0: Consider building the kernel with CONFIG_SND_DYNAMIC_MINORS=y
> kernel: [    1.651676] snd_hda_intel 0000:00:03.0: control 3:0:0:ELD:0 is already present
> kernel: [    1.651787] snd_hda_codec_hdmi: probe of hdaudioC0D0 failed with error -16
> "
> 
> This patch add invalid pcm number filter before calling hdmi_create_eld_ctl.
> 
> Fixes: fb087eaaef72 ("ALSA: hda - hdmi eld control created based on pcm")
> Signed-off-by: Wang YanQing <udknight@...il.com>

Applied, thanks.


Takashi