[PATCH] ASoC: Intel: avs: Fix NULL ptr deref on rmmod

[Amadeusz Sławiński <amadeuszx.slawinski@xxxxxxxxxxxxxxx>]

When uloading snd_soc_avs module there is NULL pointer dereference.
It happens, because codec was moved into pdata and
avs_component_hda_unregister_dais() was not updated.

Fixes: 1581d5c68208 ("ASoC: Intel: avs: boards: Add Kconfig option for obsolete card names")
Reviewed-by: Cezary Rojewski <cezary.rojewski@xxxxxxxxx>
Signed-off-by: Amadeusz Sławiński <amadeuszx.slawinski@xxxxxxxxxxxxxxx>
---
 sound/soc/intel/avs/pcm.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/sound/soc/intel/avs/pcm.c b/sound/soc/intel/avs/pcm.c
index ccf90428126d8..0efe490024b06 100644
--- a/sound/soc/intel/avs/pcm.c
+++ b/sound/soc/intel/avs/pcm.c
@@ -1570,11 +1570,13 @@ static void avs_component_hda_unregister_dais(struct snd_soc_component *componen
 {
 	struct snd_soc_acpi_mach *mach;
 	struct snd_soc_dai *dai, *save;
+	struct avs_mach_pdata *pdata;
 	struct hda_codec *codec;
 	char name[32];
 
 	mach = dev_get_platdata(component->card->dev);
-	codec = mach->pdata;
+	pdata = mach->pdata;
+	codec = pdata->codec;
 	snprintf(name, sizeof(name), "%s-cpu", dev_name(&codec->core.dev));
 
 	for_each_component_dais_safe(component, dai, save) {
-- 
2.34.1