linux-kernel - [PATCH 5.15 052/189] ALSA: sonicvibes: Fix the missing snd_card

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Message-Id: <20220418121201.989013889@linuxfoundation.org>
Date:   Mon, 18 Apr 2022 14:11:12 +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 5.15 052/189] ALSA: sonicvibes: Fix the missing snd_card_free() call at probe error

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

commit b087a381d7386ec95803222d0d9b1ac499550713 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() on the error from the
probe callback using a new helper function.

Fixes: 2ca6cbde6ad7 ("ALSA: sonicvibes: Allocate resources with device-managed APIs")
Cc: <stable@...r.kernel.org>
Link: https://lore.kernel.org/r/20220412102636.16000-25-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@...e.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 sound/pci/sonicvibes.c | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/sound/pci/sonicvibes.c b/sound/pci/sonicvibes.c
index c8c49881008f..f91cbf6eeca0 100644
--- a/sound/pci/sonicvibes.c
+++ b/sound/pci/sonicvibes.c
@@ -1387,8 +1387,8 @@ static int snd_sonicvibes_midi(struct sonicvibes *sonic,
 	return 0;
 }
 
-static int snd_sonic_probe(struct pci_dev *pci,
-			   const struct pci_device_id *pci_id)
+static int __snd_sonic_probe(struct pci_dev *pci,
+			     const struct pci_device_id *pci_id)
 {
 	static int dev;
 	struct snd_card *card;
@@ -1459,6 +1459,12 @@ static int snd_sonic_probe(struct pci_dev *pci,
 	return 0;
 }
 
+static int snd_sonic_probe(struct pci_dev *pci,
+			   const struct pci_device_id *pci_id)
+{
+	return snd_card_free_on_error(&pci->dev, __snd_sonic_probe(pci, pci_id));
+}
+
 static struct pci_driver sonicvibes_driver = {
 	.name = KBUILD_MODNAME,
 	.id_table = snd_sonic_ids,
-- 
2.35.2