linux-kernel - [PATCH] staging: greybus: codecs: fix type confusion of list iterator variable

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Date:   Mon, 21 Mar 2022 13:36:26 +0100
From:   Jakob Koschel <jakobkoschel@...il.com>
To:     Vaibhav Agarwal <vaibhav.sr@...il.com>
Cc:     Jakob Koschel <jakobkoschel@...il.com>,
        linux-kernel@...r.kernel.org, greybus-dev@...ts.linaro.org,
        linux-staging@...ts.linux.dev, Mark Greer <mgreer@...malcreek.com>,
        Johan Hovold <johan@...nel.org>, Alex Elder <elder@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Mike Rapoport <rppt@...nel.org>,
        "Brian Johannesmeyer" <bjohannesmeyer@...il.com>,
        Cristiano Giuffrida <c.giuffrida@...nl>,
        "Bos, H.J." <h.j.bos@...nl>
Subject: [PATCH] staging: greybus: codecs: fix type confusion of list iterator variable

If the list does not exit early then data == NULL and 'module' does not
point to a valid list element.
Using 'module' in such a case is not valid and was therefore removed.

Fixes: 6dd67645f22c ("greybus: audio: Use single codec driver registration")
Signed-off-by: Jakob Koschel <jakobkoschel@...il.com>
---
 drivers/staging/greybus/audio_codec.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/staging/greybus/audio_codec.c b/drivers/staging/greybus/audio_codec.c
index b589cf6b1d03..e19b91e7a72e 100644
--- a/drivers/staging/greybus/audio_codec.c
+++ b/drivers/staging/greybus/audio_codec.c
@@ -599,8 +599,8 @@ static int gbcodec_mute_stream(struct snd_soc_dai *dai, int mute, int stream)
 			break;
 	}
 	if (!data) {
-		dev_err(dai->dev, "%s:%s DATA connection missing\n",
-			dai->name, module->name);
+		dev_err(dai->dev, "%s DATA connection missing\n",
+			dai->name);
 		mutex_unlock(&codec->lock);
 		return -ENODEV;
 	}

base-commit: f443e374ae131c168a065ea1748feac6b2e76613
-- 
2.25.1