From: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Date: Fri, 3 Oct 2014 12:32:40 +0000 (+0300)
Subject: ASoC: dapm: Fix NULL pointer dereference when registering card with widgets
X-Git-Tag: fixes-against-v3.18-rc2~128^2~8^2~12^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b2d9de549c30170eed5691d369cf16680e0ce03a;p=pandora-kernel.git

ASoC: dapm: Fix NULL pointer dereference when registering card with widgets

Commit 0bd2ac3dae74 ("ASoC: Remove CODEC pointer from snd_soc_dapm_context")
introduced regression to snd_soc_dapm_new_controls() when registering a card
with card->dapm_widgets set. Call chain is:

    snd_soc_register_card()
    -> snd_soc_instantiate_card()
       -> snd_soc_dapm_new_controls()
          -> snd_soc_dapm_new_control()

Null pointer dereference occurs since card->dapm context doesn't have
associated component. Fix this by setting widget codec pointer
conditionally.

Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Mark Brown <broonie@kernel.org>
---

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