From: Thorsten Blum <thorsten.blum@linux.dev>
To: Jaroslav Kysela <perex@perex.cz>, Takashi Iwai <tiwai@suse.com>
Cc: Thorsten Blum <thorsten.blum@linux.dev>,
stable@vger.kernel.org, Takashi Iwai <tiwai@suse.de>,
linux-sound@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH] ALSA: ad1816a: Fix potential NULL pointer deref in snd_card_ad1816a_pnp()
Date: Thu, 3 Jul 2025 22:06:13 +0200 [thread overview]
Message-ID: <20250703200616.304309-2-thorsten.blum@linux.dev> (raw)
Use pr_warn() instead of dev_warn() when 'pdev' is NULL to avoid a
potential NULL pointer dereference.
Cc: stable@vger.kernel.org
Fixes: 20869176d7a7 ("ALSA: ad1816a: Use standard print API")
Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev>
---
sound/isa/ad1816a/ad1816a.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/sound/isa/ad1816a/ad1816a.c b/sound/isa/ad1816a/ad1816a.c
index 99006dc4777e..5c9e2d41d900 100644
--- a/sound/isa/ad1816a/ad1816a.c
+++ b/sound/isa/ad1816a/ad1816a.c
@@ -98,7 +98,7 @@ static int snd_card_ad1816a_pnp(int dev, struct pnp_card_link *card,
pdev = pnp_request_card_device(card, id->devs[1].id, NULL);
if (pdev == NULL) {
mpu_port[dev] = -1;
- dev_warn(&pdev->dev, "MPU401 device busy, skipping.\n");
+ pr_warn("MPU401 device busy, skipping.\n");
return 0;
}
--
2.50.0
next reply other threads:[~2025-07-03 20:07 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-07-03 20:06 Thorsten Blum [this message]
2025-07-04 7:04 ` [PATCH] ALSA: ad1816a: Fix potential NULL pointer deref in snd_card_ad1816a_pnp() Takashi Iwai
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20250703200616.304309-2-thorsten.blum@linux.dev \
--to=thorsten.blum@linux.dev \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-sound@vger.kernel.org \
--cc=perex@perex.cz \
--cc=stable@vger.kernel.org \
--cc=tiwai@suse.com \
--cc=tiwai@suse.de \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox