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 <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Bjorn Andersson <[email protected]>

Author: toblux

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;

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;