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ALSA: pcmcia: Fix resource leak in snd_pdacf_probe error path

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When pdacf_config() fails, snd_pdacf_probe() returns the error code
directly without freeing the sound card resources allocated by
snd_card_new(), which leads to a memory leak.

Add proper error handling to free the sound card and clear the card
list entry when pdacf_config() fails.

Fixes: 15b99ac172 ("[PATCH] pcmcia: add return value to _config() functions")
Suggested-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Haotian Zhang <vulab@iscas.ac.cn>
Link: https://patch.msgid.link/20251215090433.211-1-vulab@iscas.ac.cn
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Haotian Zhang
2025-12-15 17:04:33 +08:00
committed by Takashi Iwai
parent 2a03b40dea
commit 5032347c04
1 changed files with 7 additions and 1 deletions
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8
sound/pcmcia/pdaudiocf/pdaudiocf.c
View File

@@ -131,7 +131,13 @@ static int snd_pdacf_probe(struct pcmcia_device *link)
link->config_index = 1;
link->config_regs = PRESENT_OPTION;
return pdacf_config(link);
err = pdacf_config(link);
if (err < 0) {
card_list[i] = NULL;
snd_card_free(card);
return err;
}
return 0;
}