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From: Mateusz Gorski <mateusz.gorski@linux.intel.com>
To: alsa-devel@alsa-project.org
Cc: Mateusz Gorski <mateusz.gorski@linux.intel.com>,
	cezary.rojewski@intel.com, broonie@kernel.org, tiwai@suse.com,
	pierre-louis.bossart@linux.intel.com
Subject: [PATCH] ASoC: Intel: skl_hda_dsp_generic: Fix NULLptr dereference in autosuspend delay
Date: Wed, 22 Jul 2020 19:35:24 +0200	[thread overview]
Message-ID: <20200722173524.30161-1-mateusz.gorski@linux.intel.com> (raw)

Different modules for HDMI codec are used depending on the
"hda_codec_use_common_hdmi" option being enabled or not. Driver private
context for both of them is different.
This leads to null-pointer dereference error when driver tries to set
autosuspend delay for HDMI codec while the option is off (hdac_hdmi
module is used for HDMI).

Change the string in conditional statement to "ehdaudio0D0" to ensure
that only the HDAudio codec is handled by this function.

Fixes: 5bf73b1b1dec ("ASoC: intel/skl/hda - fix oops on systems without i915 audio codec")
Signed-off-by: Mateusz Gorski <mateusz.gorski@linux.intel.com>
---
 sound/soc/intel/boards/skl_hda_dsp_generic.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sound/soc/intel/boards/skl_hda_dsp_generic.c b/sound/soc/intel/boards/skl_hda_dsp_generic.c
index ca4900036ead..bc50eda297ab 100644
--- a/sound/soc/intel/boards/skl_hda_dsp_generic.c
+++ b/sound/soc/intel/boards/skl_hda_dsp_generic.c
@@ -181,7 +181,7 @@ static void skl_set_hda_codec_autosuspend_delay(struct snd_soc_card *card)
 	struct snd_soc_dai *dai;
 
 	for_each_card_rtds(card, rtd) {
-		if (!strstr(rtd->dai_link->codecs->name, "ehdaudio"))
+		if (!strstr(rtd->dai_link->codecs->name, "ehdaudio0D0"))
 			continue;
 		dai = asoc_rtd_to_codec(rtd, 0);
 		hda_pvt = snd_soc_component_get_drvdata(dai->component);
-- 
2.17.1


             reply	other threads:[~2020-07-22 17:36 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-07-22 17:35 Mateusz Gorski [this message]
2020-07-22 18:24 ` [PATCH] ASoC: Intel: skl_hda_dsp_generic: Fix NULLptr dereference in autosuspend delay Pierre-Louis Bossart
2020-07-22 18:59   ` Cezary Rojewski
2020-07-22 19:04     ` Pierre-Louis Bossart
2020-08-12 13:48       ` Kai Vehmanen
2020-08-17 14:32         ` Gorski, Mateusz
2020-08-17 16:35           ` Kai Vehmanen
2020-08-19 12:15 ` Mark Brown

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