can: peak_usb: pcan_usb_get_serial(): unconditionally assign serial_number

The function serial_number is only called from one location with a
valid serial_number pointer. Remove not needed NULL pointer check.

Link: https://lore.kernel.org/r/20210406111622.1874957-10-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 ffb01c3..929cc1b 100644 (file)
--- a/drivers/net/can/usb/peak_usb/pcan_usb.c
+++ b/drivers/net/can/usb/peak_usb/pcan_usb.c
@@ -367,9 +367,7 @@ static int pcan_usb_get_serial(struct peak_usb_device *dev, u32 *serial_number)
        err = pcan_usb_wait_rsp(dev, PCAN_USB_CMD_SN, PCAN_USB_GET, args);
        if (err)
                return err;
-
-       if (serial_number)
-               *serial_number = le32_to_cpup((__le32 *)args);
+       *serial_number = le32_to_cpup((__le32 *)args);
 
        return 0;
 }