ISDN/sc: fix longstanding warning

drivers/isdn/sc/shmem.c: In function 'memcpy_toshmem':
drivers/isdn/sc/shmem.c:54: warning: passing argument 1 of 'memcpy_toio' makes pointer from integer without a cast

Also, remove some unneeded braces, and add some useful whitespace.
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>

drivers/isdn/sc/shmem.c

@@ -28,15 +28,15 @@ void memcpy_toshmem(int card, void *dest, const void *src, size_t n)
 {
 	unsigned long flags;
 	unsigned char ch;
+	unsigned long dest_rem = ((unsigned long) dest) % 0x4000;
 
-	if(!IS_VALID_CARD(card)) {
+	if (!IS_VALID_CARD(card)) {
 		pr_debug("Invalid param: %d is not a valid card id\n", card);
 		return;
 	}
 
-	if(n > SRAM_PAGESIZE) {
+	if (n > SRAM_PAGESIZE)
 		return;
-	}
 
 	/*
 	 * determine the page to load from the address
@@ -50,8 +50,7 @@ void memcpy_toshmem(int card, void *dest, const void *src, size_t n)
 
 	outb(((sc_adapter[card]->shmem_magic + ch * SRAM_PAGESIZE) >> 14) | 0x80,
 		sc_adapter[card]->ioport[sc_adapter[card]->shmem_pgport]);
-	memcpy_toio(sc_adapter[card]->rambase +
-		((unsigned long) dest % 0x4000), src, n);
+	memcpy_toio(sc_adapter[card]->rambase + dest_rem, src, n);
 	spin_unlock_irqrestore(&sc_adapter[card]->lock, flags);
 	pr_debug("%s: set page to %#x\n",sc_adapter[card]->devicename,
 		((sc_adapter[card]->shmem_magic + ch * SRAM_PAGESIZE)>>14)|0x80);