From e4c5c82024f5f292c0069cf40422b8f3bf5e684e Mon Sep 17 00:00:00 2001 From: "Antonino A. Daplas" Date: Fri, 29 Jul 2005 14:03:33 -0700 Subject: [PATCH] [PATCH] fbdev: Replace memcpy with for-loop when preparing bitmap Do not use memcpy in fb_pad_aligned_buffer. It is suboptimal because only a few bytes are moved at a time. Replace with a for-loop. Signed-off-by: Antonino Daplas Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/video/fbmem.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/video/fbmem.c b/drivers/video/fbmem.c index 40784a944d0..d2e19f6dd72 100644 --- a/drivers/video/fbmem.c +++ b/drivers/video/fbmem.c @@ -80,10 +80,12 @@ EXPORT_SYMBOL(fb_get_color_depth); */ void fb_pad_aligned_buffer(u8 *dst, u32 d_pitch, u8 *src, u32 s_pitch, u32 height) { - int i; + int i, j; for (i = height; i--; ) { - memcpy(dst, src, s_pitch); + /* s_pitch is a few bytes at the most, memcpy is suboptimal */ + for (j = 0; j < s_pitch; j++) + dst[j] = src[j]; src += s_pitch; dst += d_pitch; } -- 2.20.1