fbdev: *bfin*: drop unnecessary calls to memset

The dma_alloc_* functions sets the memory to 0 before returning so there
is no need to call memset after the allocation.  Also no point in clearing
the memory when disabling the buffer.

Signed-off-by: Vivek Kutal <vivek.kutal@azingo.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Cc: Krzysztof Helt <krzysztof.h1@poczta.fm>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/drivers/video/bf54x-lq043fb.c b/drivers/video/bf54x-lq043fb.c
index 37e60b1..6439a43 100644 (file)
--- a/drivers/video/bf54x-lq043fb.c
+++ b/drivers/video/bf54x-lq043fb.c
@@ -323,7 +323,6 @@ static int bfin_bf54x_fb_release(struct fb_info *info, int user)
                bfin_write_EPPI0_CONTROL(0);
                SSYNC();
                disable_dma(CH_EPPI0);
-               memset(fbi->fb_buffer, 0, info->fix.smem_len);
        }
 
        spin_unlock(&fbi->lock);
@@ -626,8 +625,6 @@ static int __init bfin_bf54x_probe(struct platform_device *pdev)
                goto out3;
        }
 
-       memset(info->fb_buffer, 0, fbinfo->fix.smem_len);
-
        fbinfo->screen_base = (void *)info->fb_buffer;
        fbinfo->fix.smem_start = (int)info->fb_buffer;
 

diff --git a/drivers/video/bfin-t350mcqb-fb.c b/drivers/video/bfin-t350mcqb-fb.c
index 2a2e116..f40eef8 100644 (file)
--- a/drivers/video/bfin-t350mcqb-fb.c
+++ b/drivers/video/bfin-t350mcqb-fb.c
@@ -242,7 +242,6 @@ static int bfin_t350mcqb_fb_release(struct fb_info *info, int user)
                SSYNC();
                disable_dma(CH_PPI);
                bfin_t350mcqb_stop_timers();
-               memset(fbi->fb_buffer, 0, info->fix.smem_len);
        }
 
        spin_unlock(&fbi->lock);
@@ -527,8 +526,6 @@ static int __devinit bfin_t350mcqb_probe(struct platform_device *pdev)
                goto out3;
        }
 
-       memset(info->fb_buffer, 0, fbinfo->fix.smem_len);
-
        fbinfo->screen_base = (void *)info->fb_buffer + ACTIVE_VIDEO_MEM_OFFSET;
        fbinfo->fix.smem_start = (int)info->fb_buffer + ACTIVE_VIDEO_MEM_OFFSET;