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freescale DIU: bug fix: add sanity check for AOI position 

AOI position cannot be negative.

Signed-off-by: York Sun <yorksun@freescale.com>
Cc: Kumar Gala <galak@gate.crashing.org>
Cc: "Antonino A. Daplas" <adaplas@pol.net>
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>
This commit is contained in:
York Sun 2008-08-15 00:40:29 -07:00 committed by Linus Torvalds
parent ae5591e3f4
commit fdfaa4833f
1 changed files with 4 additions and 0 deletions
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4
drivers/video/fsl-diu-fb.c
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@ -479,6 +479,10 @@ static void adjust_aoi_size_position(struct fb_var_screeninfo *var,
base_plane_width = machine_data->fsl_diu_info[0]->var.xres; base_plane_width = machine_data->fsl_diu_info[0]->var.xres;
base_plane_height = machine_data->fsl_diu_info[0]->var.yres; base_plane_height = machine_data->fsl_diu_info[0]->var.yres;
if (mfbi->x_aoi_d < 0)
mfbi->x_aoi_d = 0;
if (mfbi->y_aoi_d < 0)
mfbi->y_aoi_d = 0;
switch (index) { switch (index) {
case 0: case 0:
if (mfbi->x_aoi_d != 0) if (mfbi->x_aoi_d != 0)