[PATCH] usb: serial: digi_acceleport: Enhance error handling by checkpatch.pl

[amin-amani]

- Separated null checks for port, serial and private data.

Signed-off-by: amin-amani <didi1364@xxxxxxxxx>
---
 drivers/usb/serial/digi_acceleport.c | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/drivers/usb/serial/digi_acceleport.c b/drivers/usb/serial/digi_acceleport.c
index d1dea3850576..d858358f94d8 100644
--- a/drivers/usb/serial/digi_acceleport.c
+++ b/drivers/usb/serial/digi_acceleport.c
@@ -1309,9 +1309,14 @@ static void digi_read_bulk_callback(struct urb *urb)
 			__func__, status);
 		return;
 	}
-	if (port->serial == NULL ||
-		(serial_priv = usb_get_serial_data(port->serial)) == NULL) {
-		dev_err(&port->dev, "%s: serial is bad or serial->private "
+	if (port->serial == NULL) {
+		dev_err(&port->dev, "%s: serial is bad,"
+			" status=%d\n", __func__, status);
+		return;
+	}
+	serial_priv = usb_get_serial_data(port->serial);
+	if (serial_priv == NULL) {
+		dev_err(&port->dev, "%s:serial->private "
 			"is NULL, status=%d\n", __func__, status);
 		return;
 	}
-- 
2.25.1