can: flexcan: do_bus_err(): convert rx_,tx_errors into bool

This patch converts the rx_errors and tx_errors from int into bool
values, to reflect their actual meaning.
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>

drivers/net/can/flexcan.c

@@ -524,41 +524,41 @@ static void do_bus_err(struct net_device *dev,
 		       struct can_frame *cf, u32 reg_esr)
 {
 	struct flexcan_priv *priv = netdev_priv(dev);
-	int rx_errors = 0, tx_errors = 0;
+	bool rx_errors = false, tx_errors = false;
 
 	cf->can_id |= CAN_ERR_PROT | CAN_ERR_BUSERROR;
 
 	if (reg_esr & FLEXCAN_ESR_BIT1_ERR) {
 		netdev_dbg(dev, "BIT1_ERR irq\n");
 		cf->data[2] |= CAN_ERR_PROT_BIT1;
-		tx_errors = 1;
+		tx_errors = true;
 	}
 	if (reg_esr & FLEXCAN_ESR_BIT0_ERR) {
 		netdev_dbg(dev, "BIT0_ERR irq\n");
 		cf->data[2] |= CAN_ERR_PROT_BIT0;
-		tx_errors = 1;
+		tx_errors = true;
 	}
 	if (reg_esr & FLEXCAN_ESR_ACK_ERR) {
 		netdev_dbg(dev, "ACK_ERR irq\n");
 		cf->can_id |= CAN_ERR_ACK;
 		cf->data[3] = CAN_ERR_PROT_LOC_ACK;
-		tx_errors = 1;
+		tx_errors = true;
 	}
 	if (reg_esr & FLEXCAN_ESR_CRC_ERR) {
 		netdev_dbg(dev, "CRC_ERR irq\n");
 		cf->data[2] |= CAN_ERR_PROT_BIT;
 		cf->data[3] = CAN_ERR_PROT_LOC_CRC_SEQ;
-		rx_errors = 1;
+		rx_errors = true;
 	}
 	if (reg_esr & FLEXCAN_ESR_FRM_ERR) {
 		netdev_dbg(dev, "FRM_ERR irq\n");
 		cf->data[2] |= CAN_ERR_PROT_FORM;
-		rx_errors = 1;
+		rx_errors = true;
 	}
 	if (reg_esr & FLEXCAN_ESR_STF_ERR) {
 		netdev_dbg(dev, "STF_ERR irq\n");
 		cf->data[2] |= CAN_ERR_PROT_STUFF;
-		rx_errors = 1;
+		rx_errors = true;
 	}
 
 	priv->can.can_stats.bus_error++;