linux-kernel - [PATCH] staging: greybus: audio_helper.c: Replace strlcpy() with strscpy()

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Date:   Sat, 9 Jan 2021 18:57:31 +0530
From:   B K Karthik <bkkarthik@...u.pes.edu>
To:     Johan Hovold <johan@...nel.org>, Alex Elder <elder@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        greybus-dev@...ts.linaro.org, devel@...verdev.osuosl.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH] staging: greybus: audio_helper.c: Replace strlcpy() with
 strscpy()

In gbaudio_remove_controls() , replace the usage of strlcpy() with
strscpy() because strlcpy() only limits the *destination*
size, and the source is always read fully.

https://lore.kernel.org/r/CAHk-=wgfRnXz0W3D37d01q3JFkr_i_uTL=V6A6G1oUZcprmknw@mail.gmail.com/
was quoted by checkpatch while showing this warning.

Signed-off-by: B K Karthik <bkkarthik@...u.pes.edu>
---
 drivers/staging/greybus/audio_helper.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/staging/greybus/audio_helper.c b/drivers/staging/greybus/audio_helper.c
index 3011b8abce38..1ed4772d2771 100644
--- a/drivers/staging/greybus/audio_helper.c
+++ b/drivers/staging/greybus/audio_helper.c
@@ -166,7 +166,7 @@ static int gbaudio_remove_controls(struct snd_card *card, struct device *dev,
 			snprintf(id.name, sizeof(id.name), "%s %s", prefix,
 				 control->name);
 		else
-			strlcpy(id.name, control->name, sizeof(id.name));
+			strscpy(id.name, control->name, sizeof(id.name));
 		id.numid = 0;
 		id.iface = control->iface;
 		id.device = control->device;
-- 
2.17.1


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