neofb: kill some redundant code

Move common code outside if/else or switch/case clauses.

Drop checks done twice inside the neofb_check_var().

Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/drivers/video/neofb.c b/drivers/video/neofb.c
index 6249960..dea8645 100644 (file)
--- a/drivers/video/neofb.c
+++ b/drivers/video/neofb.c
@@ -426,11 +426,11 @@ static void vgaHWProtect(int on)
 {
        unsigned char tmp;
 
+       tmp = vga_rseq(NULL, 0x01);
        if (on) {
                /*
                 * Turn off screen and disable sequencer.
                 */
-               tmp = vga_rseq(NULL, 0x01);
                vga_wseq(NULL, 0x00, 0x01);             /* Synchronous Reset */
                vga_wseq(NULL, 0x01, tmp | 0x20);       /* disable the display */
 
@@ -439,7 +439,6 @@ static void vgaHWProtect(int on)
                /*
                 * Reenable sequencer, then turn on screen.
                 */
-               tmp = vga_rseq(NULL, 0x01);
                vga_wseq(NULL, 0x01, tmp & ~0x20);      /* reenable display */
                vga_wseq(NULL, 0x00, 0x03);             /* clear synchronousreset */
 
@@ -648,10 +647,10 @@ neofb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
        var->blue.msb_right = 0;
        var->transp.msb_right = 0;
 
+       var->transp.offset = 0;
+       var->transp.length = 0;
        switch (var->bits_per_pixel) {
        case 8:         /* PSEUDOCOLOUR, 256 */
-               var->transp.offset = 0;
-               var->transp.length = 0;
                var->red.offset = 0;
                var->red.length = 8;
                var->green.offset = 0;
@@ -661,8 +660,6 @@ neofb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
                break;
 
        case 16:                /* DIRECTCOLOUR, 64k */
-               var->transp.offset = 0;
-               var->transp.length = 0;
                var->red.offset = 11;
                var->red.length = 5;
                var->green.offset = 5;
@@ -672,8 +669,6 @@ neofb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
                break;
 
        case 24:                /* TRUECOLOUR, 16m */
-               var->transp.offset = 0;
-               var->transp.length = 0;
                var->red.offset = 16;
                var->red.length = 8;
                var->green.offset = 8;
@@ -704,8 +699,6 @@ neofb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
        if (vramlen > 4 * 1024 * 1024)
                vramlen = 4 * 1024 * 1024;
 
-       if (var->yres_virtual < var->yres)
-               var->yres_virtual = var->yres;
        if (var->xres_virtual < var->xres)
                var->xres_virtual = var->xres;
 
@@ -722,8 +715,6 @@ neofb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
           if it was possible. We should return -EINVAL, but I disagree */
        if (var->yres_virtual < var->yres)
                var->yres = var->yres_virtual;
-       if (var->xres_virtual < var->xres)
-               var->xres = var->xres_virtual;
        if (var->xoffset + var->xres > var->xres_virtual)
                var->xoffset = var->xres_virtual - var->xres;
        if (var->yoffset + var->yres > var->yres_virtual)