fix a warning 'assignment discards qualifiers' . also a bit cleanup.

sign-off: walter <wharms@bfs.de>


--- linux-2.6.14/drivers/usb/misc/sisusbvga/sisusb.c.bak	2005-12-03 21:23:38.000000000 +0100
+++ linux-2.6.14/drivers/usb/misc/sisusbvga/sisusb.c	2005-12-03 21:50:02.000000000 +0100
@@ -2440,7 +2440,7 @@
 sisusb_reset_text_mode(struct sisusb_usb_data *sisusb, int init)
 {
 	int ret = 0, slot = sisusb->font_slot, i;
-	struct font_desc *myfont;
+	const struct font_desc *myfont;
 	u8 *tempbuf;
 	u16 *tempbufb;
 	size_t written;
@@ -2458,10 +2458,12 @@
 	/* Set mode 0x03 */
 	SiSUSBSetMode(sisusb->SiS_Pr, 0x03);
 
-	if (!(myfont = find_font("VGA8x16")))
+	myfont = find_font("VGA8x16");
+	if (!myfont)
 		return 1;
 
-	if (!(tempbuf = vmalloc(8192)))
+	tempbuf = vmalloc(8192);
+	if (!tempbuf)
 		return 1;
 
 	for (i = 0; i < 256; i++)