Commit d36e796c authored Jun 03, 2014 by Bhalchandra Gajare

ASoC: wcd9330: Fix null pointer access for event callback



The ASoC machine driver provides callback to codec driver to setup
certain settings that are specific to the machine. It is possible that
machine driver does not provide this callback when there are no machine
specific settings. In such cases the callback will be NULL. Make sure to
not access the callback if it is NULL to avoid null pointer dereference.

CRs-fixed: 673401
Signed-off-by: Bhalchandra Gajare <gajare@codeaurora.org>
Change-Id: If952e99310c9b633429fe0c803336a393ef0085c

parent 49621277

sound/soc/codecs/wcd9330.c

+4 −1

Original line number	Diff line number	Diff line
		@@ -7229,7 +7229,10 @@ static int tomtom_post_reset_cb(struct wcd9xxx *wcd9xxx)
		else
		tomtom_hs_detect(codec, tomtom->mbhc.mbhc_cfg);
		}
		tomtom->machine_codec_event_cb(codec, WCD9XXX_CODEC_EVENT_CODEC_UP);

		if (tomtom->machine_codec_event_cb)
		tomtom->machine_codec_event_cb(codec,
		WCD9XXX_CODEC_EVENT_CODEC_UP);

		tomtom_cleanup_irqs(tomtom);
		ret = tomtom_setup_irqs(tomtom);