linux-kernel - [PATCH] rpmsg: Use strscpy() instead of strscpy

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Message-ID: <20250407091714.743681-1-thorsten.blum@linux.dev>
Date: Mon,  7 Apr 2025 11:17:14 +0200
From: Thorsten Blum <thorsten.blum@...ux.dev>
To: Bjorn Andersson <andersson@...nel.org>,
	Mathieu Poirier <mathieu.poirier@...aro.org>
Cc: Thorsten Blum <thorsten.blum@...ux.dev>,
	linux-arm-msm@...r.kernel.org,
	linux-remoteproc@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH] rpmsg: Use strscpy() instead of strscpy_pad()

kzalloc() already zero-initializes the destination buffer, making
strscpy() sufficient for safely copying the name. The additional NUL-
padding performed by strscpy_pad() is unnecessary.

The size parameter is optional, and strscpy() automatically determines
the size of the destination buffer using sizeof() when the argument is
omitted. RPMSG_NAME_SIZE is equal to sizeof(rpdev->id.name) and can be
removed - remove it.

No functional changes intended.

Signed-off-by: Thorsten Blum <thorsten.blum@...ux.dev>
---
 drivers/rpmsg/qcom_glink_native.c | 2 +-
 drivers/rpmsg/qcom_smd.c          | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/rpmsg/qcom_glink_native.c b/drivers/rpmsg/qcom_glink_native.c
index a2f9d85c7156..820a6ca5b1d7 100644
--- a/drivers/rpmsg/qcom_glink_native.c
+++ b/drivers/rpmsg/qcom_glink_native.c
@@ -1663,7 +1663,7 @@ static int qcom_glink_rx_open(struct qcom_glink *glink, unsigned int rcid,
 		}
 
 		rpdev->ept = &channel->ept;
-		strscpy_pad(rpdev->id.name, name, RPMSG_NAME_SIZE);
+		strscpy(rpdev->id.name, name);
 		rpdev->src = RPMSG_ADDR_ANY;
 		rpdev->dst = RPMSG_ADDR_ANY;
 		rpdev->ops = &glink_device_ops;
diff --git a/drivers/rpmsg/qcom_smd.c b/drivers/rpmsg/qcom_smd.c
index 40d386809d6b..3c86c5553de6 100644
--- a/drivers/rpmsg/qcom_smd.c
+++ b/drivers/rpmsg/qcom_smd.c
@@ -1089,7 +1089,7 @@ static int qcom_smd_create_device(struct qcom_smd_channel *channel)
 
 	/* Assign public information to the rpmsg_device */
 	rpdev = &qsdev->rpdev;
-	strscpy_pad(rpdev->id.name, channel->name, RPMSG_NAME_SIZE);
+	strscpy(rpdev->id.name, channel->name);
 	rpdev->src = RPMSG_ADDR_ANY;
 	rpdev->dst = RPMSG_ADDR_ANY;
 
-- 
2.49.0