[PATCH] mbxfb: Fix framebuffer size smaller than requested

This patch fixes a bug where we obtain a smaller resolution than requested.
(eg: in 640x480, only 639x479 usable pixels).

This was due to 1 being substracted from the xres and yres vars two times:
first in mbxfb.c and then in the macros from reg_bits.h.

This patch removes the minus ones from the mbxfb.c file. Tested and works.
Signed-off-by: Raphael Assenat <raph@8d.com>
Signed-off-by: Antonino Daplas <adaplas@pol.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

drivers/video/mbx/mbxfb.c

@@ -255,8 +255,8 @@ static int mbxfb_set_par(struct fb_info *info)
 
 	/* setup resolution */
 	gsctrl &= ~(FMsk(GSCTRL_GSWIDTH) | FMsk(GSCTRL_GSHEIGHT));
-	gsctrl |= Gsctrl_Width(info->var.xres - 1) |
-		Gsctrl_Height(info->var.yres - 1);
+	gsctrl |= Gsctrl_Width(info->var.xres) |
+		Gsctrl_Height(info->var.yres);
 	writel(gsctrl, GSCTRL);
 	udelay(1000);
 
@@ -413,8 +413,8 @@ static void __devinit setup_graphics(struct fb_info *fbi)
 {
 	unsigned long gsctrl;
 
-	gsctrl = GSCTRL_GAMMA_EN | Gsctrl_Width(fbi->var.xres - 1) |
-		Gsctrl_Height(fbi->var.yres - 1);
+	gsctrl = GSCTRL_GAMMA_EN | Gsctrl_Width(fbi->var.xres) |
+		Gsctrl_Height(fbi->var.yres);
 	switch (fbi->var.bits_per_pixel) {
 	case 16:
 		if (fbi->var.green.length == 5)