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video: Check for valid FB pointer before clearing

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This command will start erasing at memory address zero
if there is not a valid framebuffer address that was found
during video_init().

This is a common case with Chrome OS devices in normal mode
when we do not execute the video option rom in coreboot.

Signed-off-by: Duncan Laurie <dlaurie@chromium.org>
Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Duncan Laurie
2012-11-03 11:41:40 +00:00
committed by Simon Glass
parent c94663170b
commit ae63057446
1 changed files with 2 additions and 0 deletions
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2
drivers/video/cfb_console.c
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@@ -2293,6 +2293,8 @@ int video_get_screen_columns(void)
void video_clear(void) void video_clear(void)
{ {
if (!video_fb_address)
return;
#ifdef VIDEO_HW_RECTFILL #ifdef VIDEO_HW_RECTFILL
video_hw_rectfill(VIDEO_PIXEL_SIZE, /* bytes per pixel */ video_hw_rectfill(VIDEO_PIXEL_SIZE, /* bytes per pixel */
0, /* dest pos x */ 0, /* dest pos x */