linux-kernel - [PATCH 5.15 042/189] ALSA: korg1212: Fix the missing snd_card

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Message-Id: <20220418121201.708018902@linuxfoundation.org>
Date:   Mon, 18 Apr 2022 14:11:02 +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 5.15 042/189] ALSA: korg1212: Fix the missing snd_card_free() call at probe error

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

commit c01b723a56ce18ae66ff18c5803942badc15fbcd 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: b5cde369b618 ("ALSA: korg1212: Allocate resources with device-managed APIs")
Cc: <stable@...r.kernel.org>
Link: https://lore.kernel.org/r/20220412102636.16000-20-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@...e.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 sound/pci/korg1212/korg1212.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/sound/pci/korg1212/korg1212.c b/sound/pci/korg1212/korg1212.c
index 5c9e240ff6a9..33b4f95d65b3 100644
--- a/sound/pci/korg1212/korg1212.c
+++ b/sound/pci/korg1212/korg1212.c
@@ -2355,7 +2355,7 @@ snd_korg1212_probe(struct pci_dev *pci,
 
 	err = snd_korg1212_create(card, pci);
 	if (err < 0)
-		return err;
+		goto error;
 
 	strcpy(card->driver, "korg1212");
 	strcpy(card->shortname, "korg1212");
@@ -2366,10 +2366,14 @@ snd_korg1212_probe(struct pci_dev *pci,
 
 	err = snd_card_register(card);
 	if (err < 0)
-		return err;
+		goto error;
 	pci_set_drvdata(pci, card);
 	dev++;
 	return 0;
+
+ error:
+	snd_card_free(card);
+	return err;
 }
 
 static struct pci_driver korg1212_driver = {
-- 
2.35.2