[PATCH] ASoC: Intel: sof_sdw: Prevent jump to NULL add_sidecar callback

[Richard Fitzgerald <rf@opensource.cirrus.com>]

In create_sdw_dailink() check that sof_end->codec_info->add_sidecar
is not NULL before calling it.

The original code assumed that if include_sidecar is true, the codec
on that link has an add_sidecar callback. But there could be other
codecs on the same link that do not have an add_sidecar callback.

Fixes: da5244180281 ("ASoC: Intel: sof_sdw: Add callbacks to register sidecar devices")
Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com>
---
 sound/soc/intel/boards/sof_sdw.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sound/soc/intel/boards/sof_sdw.c b/sound/soc/intel/boards/sof_sdw.c
index 28f03a5f29f7..c013e31d098e 100644
--- a/sound/soc/intel/boards/sof_sdw.c
+++ b/sound/soc/intel/boards/sof_sdw.c
@@ -841,7 +841,7 @@ static int create_sdw_dailink(struct snd_soc_card *card,
 			(*codec_conf)++;
 		}
 
-		if (sof_end->include_sidecar) {
+		if (sof_end->include_sidecar && sof_end->codec_info->add_sidecar) {
 			ret = sof_end->codec_info->add_sidecar(card, dai_links, codec_conf);
 			if (ret)
 				return ret;
-- 
2.39.5