[28/39] ALSA: bt87x: Fix the missing snd_card_free() call at probe error

Commit Message

Takashi Iwai April 12, 2022, 10:26 a.m. UTC

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: 9e80ed64a006 ("ALSA: bt87x: Allocate resources with device-managed APIs")
Cc: <[e-mail]>
Signed-off-by: Takashi Iwai <[e-mail]>
---
 sound/pci/bt87x.c | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

Patch

diff --git a/sound/pci/bt87x.c b/sound/pci/bt87x.c
index d23f93163841..621985bfee5d 100644
--- a/sound/pci/bt87x.c
+++ b/sound/pci/bt87x.c
@@ -805,8 +805,8 @@  static int snd_bt87x_detect_card(struct pci_dev *pci)
 	return SND_BT87X_BOARD_UNKNOWN;
 }
 
-static int snd_bt87x_probe(struct pci_dev *pci,
-			   const struct pci_device_id *pci_id)
+static int __snd_bt87x_probe(struct pci_dev *pci,
+			     const struct pci_device_id *pci_id)
 {
 	static int dev;
 	struct snd_card *card;
@@ -889,6 +889,12 @@  static int snd_bt87x_probe(struct pci_dev *pci,
 	return 0;
 }
 
+static int snd_bt87x_probe(struct pci_dev *pci,
+			   const struct pci_device_id *pci_id)
+{
+	return snd_card_free_on_error(&pci->dev, __snd_bt87x_probe(pci, pci_id));
+}
+
 /* default entries for all Bt87x cards - it's not exported */
 /* driver_data is set to 0 to call detection */
 static const struct pci_device_id snd_bt87x_default_ids[] = {