can: peak_usb: pcan_usb_get_serial(): make use of le32_to_cpup()

This patch replaces the memcpy() + le32_to_cpu() by le32_to_cpup().

Link: https://lore.kernel.org/r/20210406111622.1874957-9-mkl@pengutronix.de
Acked-by: Stephane Grosjean <s.grosjean@peak-system.com>
Tested-by: Stephane Grosjean <s.grosjean@peak-system.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>

diff --git a/drivers/net/can/usb/peak_usb/pcan_usb.c b/drivers/net/can/usb/peak_usb/pcan_usb.c
index fd5ea95fd55d615a7907ff4e7b2c2b713c25387a..ffb01c3a38272a54f8da42d510ecd7a847b18b81 100644 (file)
--- a/drivers/net/can/usb/peak_usb/pcan_usb.c
+++ b/drivers/net/can/usb/peak_usb/pcan_usb.c
@@ -368,12 +368,8 @@ static int pcan_usb_get_serial(struct peak_usb_device *dev, u32 *serial_number)
        if (err)
                return err;
 
-       if (serial_number) {
-               __le32 tmp32;
-
-               memcpy(&tmp32, args, 4);
-               *serial_number = le32_to_cpu(tmp32);
-       }
+       if (serial_number)
+               *serial_number = le32_to_cpup((__le32 *)args);
 
        return 0;
 }