linux-kernel - [PATCH 5.15 023/189] ALSA: aw2: Fix the missing snd_card

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Message-Id: <20220418121201.173965651@linuxfoundation.org>
Date:   Mon, 18 Apr 2022 14:10:43 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Takashi Iwai <tiwai@...e.de>
Subject: [PATCH 5.15 023/189] ALSA: aw2: Fix the missing snd_card_free() call at probe error

From: Takashi Iwai <tiwai@...e.de>

commit bf4067e8a19eae67c45659a956c361d59251ba57 upstream.

The previous cleanup with devres may lead to the incorrect release
orders at the probe error handling due to the devres's nature.  Until
we register the card, snd_card_free() has to be called at first for
releasing the stuff properly when the driver tries to manage and
release the stuff via card->private_free().

This patch fixes it by calling snd_card_free() manually on the error
from the probe callback.

Fixes: 33631012cd06 ("ALSA: aw2: Allocate resources with device-managed APIs")
Cc: <stable@...r.kernel.org>
Link: https://lore.kernel.org/r/20220412102636.16000-32-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@...e.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 sound/pci/aw2/aw2-alsa.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/sound/pci/aw2/aw2-alsa.c b/sound/pci/aw2/aw2-alsa.c
index d56f126d6fdd..29a4bcdec237 100644
--- a/sound/pci/aw2/aw2-alsa.c
+++ b/sound/pci/aw2/aw2-alsa.c
@@ -275,7 +275,7 @@ static int snd_aw2_probe(struct pci_dev *pci,
 	/* (3) Create main component */
 	err = snd_aw2_create(card, pci);
 	if (err < 0)
-		return err;
+		goto error;
 
 	/* initialize mutex */
 	mutex_init(&chip->mtx);
@@ -294,13 +294,17 @@ static int snd_aw2_probe(struct pci_dev *pci,
 	/* (6) Register card instance */
 	err = snd_card_register(card);
 	if (err < 0)
-		return err;
+		goto error;
 
 	/* (7) Set PCI driver data */
 	pci_set_drvdata(pci, card);
 
 	dev++;
 	return 0;
+
+ error:
+	snd_card_free(card);
+	return err;
 }
 
 /* open callback */
-- 
2.35.2