From 849489b94fe35172a4fea6e09acabacd273d8993 Mon Sep 17 00:00:00 2001
From: TsaiGaggery <gaggery.tsai@intel.com>
Date: Wed, 11 Mar 2026 14:21:39 -0700
Subject: [PATCH 17/17] ASoC: SDCA: Fix NULL pointer dereference in
 sdca_jack_process()

Add NULL guard for card and card->snd_card before dereferencing.
During card teardown, component->card can be NULL when an IRQ fires.
---
diff --git a/sound/soc/sdca/sdca_jack.c b/sound/soc/sdca/sdca_jack.c
index 49d317d..b52d88a 100644
--- a/sound/soc/sdca/sdca_jack.c
+++ b/sound/soc/sdca/sdca_jack.c
@@ -37,13 +37,21 @@ int sdca_jack_process(struct sdca_interrupt *interrupt)
 	struct device *dev = interrupt->dev;
 	struct snd_soc_component *component = interrupt->component;
 	struct snd_soc_card *card = component->card;
-	struct rw_semaphore *rwsem = &card->snd_card->controls_rwsem;
+	struct rw_semaphore *rwsem;
 	struct jack_state *state = interrupt->priv;
-	struct snd_kcontrol *kctl = state->kctl;
+	struct snd_kcontrol *kctl;
 	struct snd_ctl_elem_value *ucontrol __free(kfree) = NULL;
 	unsigned int reg, val;
 	int ret;
 
+	if (!card || !card->snd_card) {
+		dev_dbg(dev, "card not yet bound, deferring jack event\n");
+		return -ENODEV;
+	}
+
+	rwsem = &card->snd_card->controls_rwsem;
+	kctl = state->kctl;
+
 	guard(rwsem_write)(rwsem);
 
 	if (!kctl) {