ISDN: Fix compiler warnings

The copy_to/from_user fixes left some variables unused, which
the compiler warned about.

drivers/isdn/capi/capi.c

@@ -645,7 +645,6 @@ capi_read(struct file *file, char *buf, size_t count, loff_t *ppos)
 {
 	struct capidev *cdev = (struct capidev *)file->private_data;
 	struct sk_buff *skb;
-	int retval;
 	size_t copied;
 
 	if (ppos != &file->f_pos)
@@ -689,7 +688,6 @@ capi_write(struct file *file, const char *buf, size_t count, loff_t *ppos)
 {
 	struct capidev *cdev = (struct capidev *)file->private_data;
 	struct sk_buff *skb;
-	int retval;
 	u16 mlen;
 
         if (ppos != &file->f_pos)

drivers/isdn/capi/kcapi.c

@@ -1168,7 +1168,6 @@ static int old_capi_manufacturer(unsigned int cmd, void *data)
 int capi20_manufacturer(unsigned int cmd, void *data)
 {
         struct capi_ctr *card;
-	int retval;
 
 	switch (cmd) {
 #ifdef CONFIG_AVMB1_COMPAT

drivers/isdn/sc/command.c

@@ -123,7 +123,6 @@ int command(isdn_ctrl *cmd)
 	{
 		unsigned long 	cmdptr;
 		scs_ioctl	ioc;
-		int		err;
 
 		memcpy(&cmdptr, cmd->parm.num, sizeof(unsigned long));
 		if (copy_from_user(&ioc, (scs_ioctl *)cmdptr,

drivers/isdn/sc/ioctl.c

@@ -43,7 +43,7 @@ int sc_ioctl(int card, scs_ioctl *data)
 	{
 		RspMessage	rcvmsg;
 		char		srec[SCIOC_SRECSIZE];
-		int		status, err;
+		int		status;
 
 		pr_debug("%s: SCIOLOAD: ioctl received\n", adapter[card]->devicename);
 		if(adapter[card]->EngineUp) {
@@ -89,7 +89,7 @@ int sc_ioctl(int card, scs_ioctl *data)
 	{
 		RspMessage	rcvmsg;
 		char		switchtype;
-		int 		status, err;
+		int 		status;
 
 		pr_debug("%s: SCIOSETSWITCH: ioctl received\n", adapter[card]->devicename);
 
@@ -119,7 +119,7 @@ int sc_ioctl(int card, scs_ioctl *data)
 	{
 		RspMessage 	rcvmsg;
 		char		switchtype;
-		int		status, err;
+		int		status;
 
 		pr_debug("%s: SCIOGETSWITCH: ioctl received\n", adapter[card]->devicename);
 
@@ -153,7 +153,7 @@ int sc_ioctl(int card, scs_ioctl *data)
 	{
 		RspMessage	rcvmsg;
 		char		spid[SCIOC_SPIDSIZE];
-		int		status, err;
+		int		status;
 
 		pr_debug("%s: SCIOGETSPID: ioctl received\n", adapter[card]->devicename);
 
@@ -185,7 +185,7 @@ int sc_ioctl(int card, scs_ioctl *data)
 	{
 		RspMessage	rcvmsg;
 		char		spid[SCIOC_SPIDSIZE];
-		int 		status, err;
+		int 		status;
 
 		pr_debug("%s: DCBIOSETSPID: ioctl received\n", adapter[card]->devicename);
 
@@ -216,7 +216,7 @@ int sc_ioctl(int card, scs_ioctl *data)
 	{
 		RspMessage	rcvmsg;
 		char		dn[SCIOC_DNSIZE];
-		int		status, err;
+		int		status;
 
 		pr_debug("%s: SCIOGETDN: ioctl received\n", adapter[card]->devicename);
 
@@ -249,7 +249,7 @@ int sc_ioctl(int card, scs_ioctl *data)
 	{
 		RspMessage	rcvmsg;
 		char		dn[SCIOC_DNSIZE];
-		int 		status, err;
+		int 		status;
 
 		pr_debug("%s: SCIOSETDN: ioctl received\n", adapter[card]->devicename);
 
@@ -287,7 +287,6 @@ int sc_ioctl(int card, scs_ioctl *data)
 	case SCIOCSTAT:
 	{
 		boardInfo bi;
-		int err;
 
 		pr_debug("%s: SCIOSTAT: ioctl received\n", adapter[card]->devicename);
 		GetStatus(card, &bi);
@@ -303,7 +302,7 @@ int sc_ioctl(int card, scs_ioctl *data)
 	{
 		RspMessage	rcvmsg;
 		char		speed;
-		int		status, err;
+		int		status;
 
 		pr_debug("%s: SCIOGETSPEED: ioctl received\n", adapter[card]->devicename);