[PATCH] fbcon: Break up bit_putcs into its component functions

The function bit_putcs() in drivers/video/console/bitblit.c is becoming large.
 Break it up into its component functions (bit_putcs_unaligned and
bit_putcs_aligned).

Incorporated fb_pad_aligned_buffer() optimization by Roman Zippel.

Signed-off-by: Antonino Daplas <adaplas@pol.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 15 insertions, 0 deletions

diff --git a/include/linux/fb.h b/include/linux/fb.h
index 9a4f035e9fdc..82e39cd0c4fb 100644
--- a/include/linux/fb.h
+++ b/include/linux/fb.h
@@ -833,6 +833,21 @@ extern int fb_new_modelist(struct fb_info *info);
 extern struct fb_info *registered_fb[FB_MAX];
 extern int num_registered_fb;
 
+static inline void __fb_pad_aligned_buffer(u8 *dst, u32 d_pitch,
+                                           u8 *src, u32 s_pitch, u32 height)
+{
+        int i, j;
+
+        d_pitch -= s_pitch;
+
+        for (i = height; i--; ) {
+                /* s_pitch is a few bytes at the most, memcpy is suboptimal */
+                for (j = 0; j < s_pitch; j++)
+                        *dst++ = *src++;
+                dst += d_pitch;
+        }
+}
+
 /* drivers/video/fbsysfs.c */
 extern struct fb_info *framebuffer_alloc(size_t size, struct device *dev);
 extern void framebuffer_release(struct fb_info *info);