[PATCH] vgacon: Workaround for resize bug in some chipsets

[powerpc.git] / drivers / video / console / fbcon_rotate.h

diff --git a/drivers/video/console/fbcon_rotate.h b/drivers/video/console/fbcon_rotate.h
index 90c6720..1b8f92f 100644 (file)
--- a/drivers/video/console/fbcon_rotate.h
+++ b/drivers/video/console/fbcon_rotate.h
@@ -21,21 +21,13 @@
         (s == SCROLL_REDRAW || s == SCROLL_MOVE || !(i)->fix.xpanstep) ? \
         (i)->var.xres : (i)->var.xres_virtual; })
 
-/*
- * The bitmap is always big endian
- */
-#if defined(__LITTLE_ENDIAN)
-#define FBCON_BIT(b) (7 - (b))
-#else
-#define FBCON_BIT(b) (b)
-#endif
 
 static inline int pattern_test_bit(u32 x, u32 y, u32 pitch, const char *pat)
 {
        u32 tmp = (y * pitch) + x, index = tmp / 8,  bit = tmp % 8;
 
        pat +=index;
-       return (test_bit(FBCON_BIT(bit), (void *)pat));
+       return (*pat) & (0x80 >> bit);
 }
 
 static inline void pattern_set_bit(u32 x, u32 y, u32 pitch, char *pat)
@@ -43,13 +35,14 @@ static inline void pattern_set_bit(u32 x, u32 y, u32 pitch, char *pat)
        u32 tmp = (y * pitch) + x, index = tmp / 8, bit = tmp % 8;
 
        pat += index;
-       set_bit(FBCON_BIT(bit), (void *)pat);
+
+       (*pat) |= 0x80 >> bit;
 }
 
 static inline void rotate_ud(const char *in, char *out, u32 width, u32 height)
 {
        int i, j;
-       int shift = width % 8;
+       int shift = (8 - (width % 8)) & 7;
 
        width = (width + 7) & ~7;
 
@@ -85,7 +78,7 @@ static inline void rotate_cw(const char *in, char *out, u32 width, u32 height)
 static inline void rotate_ccw(const char *in, char *out, u32 width, u32 height)
 {
        int i, j, h = height, w = width;
-       int shift = width % 8;
+       int shift = (8 - (width % 8)) & 7;
 
        width = (width + 7) & ~7;
        height = (height + 7) & ~7;