Unverified Commit 8ce1cbd6 authored by Jaroslav Kysela's avatar Jaroslav Kysela Committed by Mark Brown
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ASoC: topology: fix soc_tplg_fe_link_create() - link->dobj initialization order 



The code which checks the return value for snd_soc_add_dai_link() call
in soc_tplg_fe_link_create() moved the snd_soc_add_dai_link() call before
link->dobj members initialization.

While it does not affect the latest kernels, the old soc-core.c code
in the stable kernels is affected. The snd_soc_add_dai_link() function uses
the link->dobj.type member to check, if the link structure is valid.

Reorder the link->dobj initialization to make things work again.
It's harmless for the recent code (and the structure should be properly
initialized before other calls anyway).

The problem is in stable linux-5.4.y since version 5.4.11 when the
upstream commit 76d27036 was applied.

Fixes: 76d27036 ("ASoC: topology: Check return value for snd_soc_add_dai_link()")
Cc: Dragos Tarcatu <dragos_tarcatu@mentor.com>
Cc: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Cc: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Cc: Mark Brown <broonie@kernel.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: default avatarJaroslav Kysela <perex@perex.cz>
Link: https://lore.kernel.org/r/20200122190752.3081016-1-perex@perex.cz


Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent 15adb20f

sound/soc/soc-topology.c

+4 −3
Original line number Diff line number Diff line
@@ -1906,6 +1906,10 @@ static int soc_tplg_fe_link_create(struct soc_tplg *tplg, 
	link->num_codecs = 1;

	link->num_platforms = 1;



	link->dobj.index = tplg->index;

	link->dobj.ops = tplg->ops;

	link->dobj.type = SND_SOC_DOBJ_DAI_LINK;



	if (strlen(pcm->pcm_name)) {

		link->name = kstrdup(pcm->pcm_name, GFP_KERNEL);

		link->stream_name = kstrdup(pcm->pcm_name, GFP_KERNEL);
@@ -1942,9 +1946,6 @@ static int soc_tplg_fe_link_create(struct soc_tplg *tplg, 
		goto err;

	}



	link->dobj.index = tplg->index;

	link->dobj.ops = tplg->ops;

	link->dobj.type = SND_SOC_DOBJ_DAI_LINK;

	list_add(&link->dobj.list, &tplg->comp->dobj_list);



	return 0;