queue-6.12/alsa-pcmcia-fix-resource-leak-in-snd_pdacf_probe-err.patch

From 9d8c4f018e476188fb67ad7862dec719fd9b9489 Mon Sep 17 00:00:00 2001
From: Sasha Levin <sashal@kernel.org>
Date: Mon, 15 Dec 2025 17:04:33 +0800
Subject: ALSA: pcmcia: Fix resource leak in snd_pdacf_probe error path

From: Haotian Zhang <vulab@iscas.ac.cn>

[ Upstream commit 5032347c04ba7ff9ba878f262e075d745c06a2a8 ]

When pdacf_config() fails, snd_pdacf_probe() returns the error code
directly without freeing the sound card resources allocated by
snd_card_new(), which leads to a memory leak.

Add proper error handling to free the sound card and clear the card
list entry when pdacf_config() fails.

Fixes: 15b99ac17295 ("[PATCH] pcmcia: add return value to _config() functions")
Suggested-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Haotian Zhang <vulab@iscas.ac.cn>
Link: https://patch.msgid.link/20251215090433.211-1-vulab@iscas.ac.cn
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 sound/pcmcia/pdaudiocf/pdaudiocf.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/sound/pcmcia/pdaudiocf/pdaudiocf.c b/sound/pcmcia/pdaudiocf/pdaudiocf.c
index 494460746614..7531e89e35da 100644
--- a/sound/pcmcia/pdaudiocf/pdaudiocf.c
+++ b/sound/pcmcia/pdaudiocf/pdaudiocf.c
@@ -131,7 +131,13 @@ static int snd_pdacf_probe(struct pcmcia_device *link)
 	link->config_index = 1;
 	link->config_regs = PRESENT_OPTION;
 
-	return pdacf_config(link);
+	err = pdacf_config(link);
+	if (err < 0) {
+		card_list[i] = NULL;
+		snd_card_free(card);
+		return err;
+	}
+	return 0;
 }
 
 
-- 
2.51.0