linux-kernel - [PATCH] misc: move from strlcpy with unused retval to strscpy

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Date:   Thu, 18 Aug 2022 23:00:31 +0200
From:   Wolfram Sang <wsa+renesas@...g-engineering.com>
To:     linux-kernel@...r.kernel.org
Cc:     Wolfram Sang <wsa+renesas@...g-engineering.com>,
        Arnd Bergmann <arnd@...db.de>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Jean Delvare <jdelvare@...e.com>,
        Tomas Winkler <tomas.winkler@...el.com>
Subject: [PATCH] misc: move from strlcpy with unused retval to strscpy

Follow the advice of the below link and prefer 'strscpy' in this
subsystem. Conversion is 1:1 because the return value is not used.
Generated by a coccinelle script.

Link: https://lore.kernel.org/r/CAHk-=wgfRnXz0W3D37d01q3JFkr_i_uTL=V6A6G1oUZcprmknw@mail.gmail.com/
Signed-off-by: Wolfram Sang <wsa+renesas@...g-engineering.com>
---
 drivers/misc/altera-stapl/altera.c | 8 ++++----
 drivers/misc/eeprom/eeprom.c       | 2 +-
 drivers/misc/eeprom/idt_89hpesx.c  | 2 +-
 drivers/misc/ics932s401.c          | 2 +-
 drivers/misc/mei/bus-fixup.c       | 2 +-
 5 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/drivers/misc/altera-stapl/altera.c b/drivers/misc/altera-stapl/altera.c
index 075f3a36d512..a58b7cb81d98 100644
--- a/drivers/misc/altera-stapl/altera.c
+++ b/drivers/misc/altera-stapl/altera.c
@@ -1014,7 +1014,7 @@ static int altera_execute(struct altera_state *astate,
 			 * ...argument 0 is string ID
 			 */
 			count = strlen(msg_buff);
-			strlcpy(&msg_buff[count],
+			strscpy(&msg_buff[count],
 				&p[str_table + args[0]],
 				ALTERA_MESSAGE_LENGTH - count);
 			break;
@@ -2146,7 +2146,7 @@ static int altera_get_note(u8 *p, s32 program_size, s32 *offset,
 						&p[note_table + (8 * i) + 4])];
 
 				if (value != NULL)
-					strlcpy(value, value_ptr, vallen);
+					strscpy(value, value_ptr, vallen);
 
 			}
 		}
@@ -2162,13 +2162,13 @@ static int altera_get_note(u8 *p, s32 program_size, s32 *offset,
 			status = 0;
 
 			if (key != NULL)
-				strlcpy(key, &p[note_strings +
+				strscpy(key, &p[note_strings +
 						get_unaligned_be32(
 						&p[note_table + (8 * i)])],
 					keylen);
 
 			if (value != NULL)
-				strlcpy(value, &p[note_strings +
+				strscpy(value, &p[note_strings +
 						get_unaligned_be32(
 						&p[note_table + (8 * i) + 4])],
 					vallen);
diff --git a/drivers/misc/eeprom/eeprom.c b/drivers/misc/eeprom/eeprom.c
index 34fa385dfd4b..adb08ae5062d 100644
--- a/drivers/misc/eeprom/eeprom.c
+++ b/drivers/misc/eeprom/eeprom.c
@@ -136,7 +136,7 @@ static int eeprom_detect(struct i2c_client *client, struct i2c_board_info *info)
 	 && !i2c_check_functionality(adapter, I2C_FUNC_SMBUS_READ_I2C_BLOCK))
 		return -ENODEV;
 
-	strlcpy(info->type, "eeprom", I2C_NAME_SIZE);
+	strscpy(info->type, "eeprom", I2C_NAME_SIZE);
 
 	return 0;
 }
diff --git a/drivers/misc/eeprom/idt_89hpesx.c b/drivers/misc/eeprom/idt_89hpesx.c
index 9aec3338e37d..01614fec40fe 100644
--- a/drivers/misc/eeprom/idt_89hpesx.c
+++ b/drivers/misc/eeprom/idt_89hpesx.c
@@ -1075,7 +1075,7 @@ static const struct i2c_device_id *idt_ee_match_id(struct fwnode_handle *fwnode)
 		return NULL;
 
 	p = strchr(compatible, ',');
-	strlcpy(devname, p ? p + 1 : compatible, sizeof(devname));
+	strscpy(devname, p ? p + 1 : compatible, sizeof(devname));
 	/* Search through the device name */
 	while (id->name[0]) {
 		if (strcmp(devname, id->name) == 0)
diff --git a/drivers/misc/ics932s401.c b/drivers/misc/ics932s401.c
index 0f9ea75b0b18..d88fe136155b 100644
--- a/drivers/misc/ics932s401.c
+++ b/drivers/misc/ics932s401.c
@@ -424,7 +424,7 @@ static int ics932s401_detect(struct i2c_client *client,
 	if (revision != ICS932S401_REV)
 		dev_info(&adapter->dev, "Unknown revision %d\n", revision);
 
-	strlcpy(info->type, "ics932s401", I2C_NAME_SIZE);
+	strscpy(info->type, "ics932s401", I2C_NAME_SIZE);
 
 	return 0;
 }
diff --git a/drivers/misc/mei/bus-fixup.c b/drivers/misc/mei/bus-fixup.c
index 59506ba6fc48..4cb341fcf543 100644
--- a/drivers/misc/mei/bus-fixup.c
+++ b/drivers/misc/mei/bus-fixup.c
@@ -471,7 +471,7 @@ static void mei_nfc(struct mei_cl_device *cldev)
 	}
 
 	dev_dbg(bus->dev, "nfc radio %s\n", radio_name);
-	strlcpy(cldev->name, radio_name, sizeof(cldev->name));
+	strscpy(cldev->name, radio_name, sizeof(cldev->name));
 
 disconnect:
 	mutex_lock(&bus->device_lock);
-- 
2.35.1