net/can/mscan: add __iomem annotations

This patch fixes the following sparse warning by adding the missing
__iomem annotation.

drivers/net/can/mscan/mscan.c:73:32: warning: incorrect type in argument 1 (different address spaces)
drivers/net/can/mscan/mscan.c:73:32:    expected unsigned char volatile [noderef] [usertype] <asn:2>*addr
drivers/net/can/mscan/mscan.c:73:32:    got unsigned char *<noident>

Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>

drivers/net/can/mscan/mscan.c

@@ -62,7 +62,7 @@ static enum can_state state_map[] = {
 static int mscan_set_mode(struct net_device *dev, u8 mode)
 {
 	struct mscan_priv *priv = netdev_priv(dev);
-	struct mscan_regs *regs = (struct mscan_regs *)priv->reg_base;
+	struct mscan_regs __iomem *regs = priv->reg_base;
 	int ret = 0;
 	int i;
 	u8 canctl1;
@@ -138,7 +138,7 @@ static int mscan_set_mode(struct net_device *dev, u8 mode)
 static int mscan_start(struct net_device *dev)
 {
 	struct mscan_priv *priv = netdev_priv(dev);
-	struct mscan_regs *regs = (struct mscan_regs *)priv->reg_base;
+	struct mscan_regs __iomem *regs = priv->reg_base;
 	u8 canrflg;
 	int err;
 
@@ -178,7 +178,7 @@ static int mscan_restart(struct net_device *dev)
 	struct mscan_priv *priv = netdev_priv(dev);
 
 	if (priv->type == MSCAN_TYPE_MPC5121) {
-		struct mscan_regs *regs = (struct mscan_regs *)priv->reg_base;
+		struct mscan_regs __iomem *regs = priv->reg_base;
 
 		priv->can.state = CAN_STATE_ERROR_ACTIVE;
 		WARN(!(in_8(&regs->canmisc) & MSCAN_BOHOLD),
@@ -199,7 +199,7 @@ static netdev_tx_t mscan_start_xmit(struct sk_buff *skb, struct net_device *dev)
 {
 	struct can_frame *frame = (struct can_frame *)skb->data;
 	struct mscan_priv *priv = netdev_priv(dev);
-	struct mscan_regs *regs = (struct mscan_regs *)priv->reg_base;
+	struct mscan_regs __iomem *regs = priv->reg_base;
 	int i, rtr, buf_id;
 	u32 can_id;
 
@@ -305,7 +305,7 @@ static enum can_state check_set_state(struct net_device *dev, u8 canrflg)
 static void mscan_get_rx_frame(struct net_device *dev, struct can_frame *frame)
 {
 	struct mscan_priv *priv = netdev_priv(dev);
-	struct mscan_regs *regs = (struct mscan_regs *)priv->reg_base;
+	struct mscan_regs __iomem *regs = priv->reg_base;
 	u32 can_id;
 	int i;
 
@@ -343,7 +343,7 @@ static void mscan_get_err_frame(struct net_device *dev, struct can_frame *frame,
 				u8 canrflg)
 {
 	struct mscan_priv *priv = netdev_priv(dev);
-	struct mscan_regs *regs = (struct mscan_regs *)priv->reg_base;
+	struct mscan_regs __iomem *regs = priv->reg_base;
 	struct net_device_stats *stats = &dev->stats;
 	enum can_state old_state;
 
@@ -406,7 +406,7 @@ static int mscan_rx_poll(struct napi_struct *napi, int quota)
 {
 	struct mscan_priv *priv = container_of(napi, struct mscan_priv, napi);
 	struct net_device *dev = napi->dev;
-	struct mscan_regs *regs = (struct mscan_regs *)priv->reg_base;
+	struct mscan_regs __iomem *regs = priv->reg_base;
 	struct net_device_stats *stats = &dev->stats;
 	int npackets = 0;
 	int ret = 1;
@@ -453,7 +453,7 @@ static irqreturn_t mscan_isr(int irq, void *dev_id)
 {
 	struct net_device *dev = (struct net_device *)dev_id;
 	struct mscan_priv *priv = netdev_priv(dev);
-	struct mscan_regs *regs = (struct mscan_regs *)priv->reg_base;
+	struct mscan_regs __iomem *regs = priv->reg_base;
 	struct net_device_stats *stats = &dev->stats;
 	u8 cantier, cantflg, canrflg;
 	irqreturn_t ret = IRQ_NONE;
@@ -537,7 +537,7 @@ static int mscan_do_set_mode(struct net_device *dev, enum can_mode mode)
 static int mscan_do_set_bittiming(struct net_device *dev)
 {
 	struct mscan_priv *priv = netdev_priv(dev);
-	struct mscan_regs *regs = (struct mscan_regs *)priv->reg_base;
+	struct mscan_regs __iomem *regs = priv->reg_base;
 	struct can_bittiming *bt = &priv->can.bittiming;
 	u8 btr0, btr1;
 
@@ -559,7 +559,7 @@ static int mscan_open(struct net_device *dev)
 {
 	int ret;
 	struct mscan_priv *priv = netdev_priv(dev);
-	struct mscan_regs *regs = (struct mscan_regs *)priv->reg_base;
+	struct mscan_regs __iomem *regs = priv->reg_base;
 
 	/* common open */
 	ret = open_candev(dev);
@@ -598,7 +598,7 @@ exit_napi_disable:
 static int mscan_close(struct net_device *dev)
 {
 	struct mscan_priv *priv = netdev_priv(dev);
-	struct mscan_regs *regs = (struct mscan_regs *)priv->reg_base;
+	struct mscan_regs __iomem *regs = priv->reg_base;
 
 	netif_stop_queue(dev);
 	napi_disable(&priv->napi);
@@ -622,7 +622,7 @@ static const struct net_device_ops mscan_netdev_ops = {
 int register_mscandev(struct net_device *dev, int mscan_clksrc)
 {
 	struct mscan_priv *priv = netdev_priv(dev);
-	struct mscan_regs *regs = (struct mscan_regs *)priv->reg_base;
+	struct mscan_regs __iomem *regs = priv->reg_base;
 	u8 ctl1;
 
 	ctl1 = in_8(&regs->canctl1);
@@ -659,7 +659,7 @@ int register_mscandev(struct net_device *dev, int mscan_clksrc)
 void unregister_mscandev(struct net_device *dev)
 {
 	struct mscan_priv *priv = netdev_priv(dev);
-	struct mscan_regs *regs = (struct mscan_regs *)priv->reg_base;
+	struct mscan_regs __iomem *regs = priv->reg_base;
 	mscan_set_mode(dev, MSCAN_INIT_MODE);
 	clrbits8(&regs->canctl1, MSCAN_CANE);
 	unregister_candev(dev);