From: Anatolij Gustschin Date: Fri, 13 May 2011 09:05:08 +0000 (+0200) Subject: video: mb862xxfb: correct fix.smem_len field initialization X-Git-Tag: firefly_0821_release~7613^2~1156^2~1^2~4 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=dcdf2f7e7e154957f913e5468e3715e1a0401138;p=firefly-linux-kernel-4.4.55.git 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 --- diff --git a/drivers/video/mb862xx/mb862xxfb.c b/drivers/video/mb862xx/mb862xxfb.c index c76e663a6cd4..825795894daa 100644 --- a/drivers/video/mb862xx/mb862xxfb.c +++ b/drivers/video/mb862xx/mb862xxfb.c @@ -336,7 +336,6 @@ static int mb862xxfb_init_fbinfo(struct fb_info *fbi) strcpy(fbi->fix.id, DRV_NAME); 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_len = par->mmio_len; 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; fbi->fix.line_length = (fbi->var.xres_virtual * fbi->var.bits_per_pixel) / 8; + fbi->fix.smem_len = fbi->fix.line_length * fbi->var.yres_virtual; return 0; }