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ALSA: ac97: fix possible memory leak in snd_ac97_dev_register()

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If device_register() fails in snd_ac97_dev_register(), it should
call put_device() to give up reference, or the name allocated in
dev_set_name() is leaked.

Fixes: 0ca06a00e2 ("[ALSA] AC97 bus interface for ad-hoc drivers")
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Link: https://lore.kernel.org/r/20221019093025.1179475-1-yangyingliang@huawei.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Yang Yingliang
2022-10-19 17:30:25 +08:00
committed by Takashi Iwai
parent 491a4ccd8a
commit 4881bda5ea
1 changed files with 1 additions and 0 deletions
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1
sound/pci/ac97/ac97_codec.c
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@@ -2009,6 +2009,7 @@ static int snd_ac97_dev_register(struct snd_device *device)
err = device_register(&ac97->dev); err = device_register(&ac97->dev);
if (err < 0) { if (err < 0) {
ac97_err(ac97, "Can't register ac97 bus\n"); ac97_err(ac97, "Can't register ac97 bus\n");
put_device(&ac97->dev);
ac97->dev.bus = NULL; ac97->dev.bus = NULL;
return err; return err;
} }