[PATCH 26/39] ALSA: intel_hdmi: Fix the missing snd_card_free() call at probe error

Takashi Iwai tiwai at suse.de
Tue Apr 12 12:26:23 CEST 2022


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: 854577ac2aea ("ALSA: x86: Allocate resources with device-managed APIs")
Cc: <stable at vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai at suse.de>
---
 sound/x86/intel_hdmi_audio.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/sound/x86/intel_hdmi_audio.c b/sound/x86/intel_hdmi_audio.c
index b00634663346..0d828e35b401 100644
--- a/sound/x86/intel_hdmi_audio.c
+++ b/sound/x86/intel_hdmi_audio.c
@@ -1652,7 +1652,7 @@ static void hdmi_lpe_audio_free(struct snd_card *card)
  * This function is called when the i915 driver creates the
  * hdmi-lpe-audio platform device.
  */
-static int hdmi_lpe_audio_probe(struct platform_device *pdev)
+static int __hdmi_lpe_audio_probe(struct platform_device *pdev)
 {
 	struct snd_card *card;
 	struct snd_intelhad_card *card_ctx;
@@ -1815,6 +1815,11 @@ static int hdmi_lpe_audio_probe(struct platform_device *pdev)
 	return 0;
 }
 
+static int hdmi_lpe_audio_probe(struct platform_device *pdev)
+{
+	return snd_card_free_on_error(&pdev->dev, __hdmi_lpe_audio_probe(pdev));
+}
+
 static const struct dev_pm_ops hdmi_lpe_audio_pm = {
 	SET_SYSTEM_SLEEP_PM_OPS(hdmi_lpe_audio_suspend, hdmi_lpe_audio_resume)
 };
-- 
2.31.1



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