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video: mb862xxfb: correct fix.smem_len field initialization 

Initialize smem_len field to the actual frame buffer size and
not to the whole video RAM size. This prevents overwriting
other video memory (which could be used by other layers, cursors
or accelerated drivers) by frame buffer applications relying on
fix.smem_len.

Signed-off-by: Anatolij Gustschin <agust@denx.de>
This commit is contained in:
Anatolij Gustschin 2011-05-13 11:05:08 +02:00
parent af1ce6b2fa
commit dcdf2f7e7e
1 changed files with 1 additions and 1 deletions
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2
drivers/video/mb862xx/mb862xxfb.c
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@ -336,7 +336,6 @@ static int mb862xxfb_init_fbinfo(struct fb_info *fbi)
strcpy(fbi->fix.id, DRV_NAME); strcpy(fbi->fix.id, DRV_NAME);
fbi->fix.smem_start = (unsigned long)par->fb_base_phys; fbi->fix.smem_start = (unsigned long)par->fb_base_phys;
fbi->fix.smem_len = par->mapped_vram;
fbi->fix.mmio_start = (unsigned long)par->mmio_base_phys; fbi->fix.mmio_start = (unsigned long)par->mmio_base_phys;
fbi->fix.mmio_len = par->mmio_len; fbi->fix.mmio_len = par->mmio_len;
fbi->fix.accel = FB_ACCEL_NONE; fbi->fix.accel = FB_ACCEL_NONE;
@ -420,6 +419,7 @@ static int mb862xxfb_init_fbinfo(struct fb_info *fbi)
FB_VISUAL_PSEUDOCOLOR : FB_VISUAL_TRUECOLOR; FB_VISUAL_PSEUDOCOLOR : FB_VISUAL_TRUECOLOR;
fbi->fix.line_length = (fbi->var.xres_virtual * fbi->fix.line_length = (fbi->var.xres_virtual *
fbi->var.bits_per_pixel) / 8; fbi->var.bits_per_pixel) / 8;
fbi->fix.smem_len = fbi->fix.line_length * fbi->var.yres_virtual;
return 0; return 0;
} }