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[media] ivtvfb: use display information in info not in var for panning

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We must not use any information in the passed var besides xoffset,
yoffset and vmode as otherwise applications might abuse it. Also use the
aligned fix.line_length and not the (possible) unaligned xres_virtual.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Ian Armstrong <ian@iarmst.demon.co.uk>
Signed-off-by: Andy Walls <awalls@md.metrocast.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Laurent Pinchart 2011-05-25 06:41:23 -03:00 committed by Mauro Carvalho Chehab
parent 7700a0d293
commit 5d9c08dea0
1 changed files with 2 additions and 1 deletions
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3
drivers/media/video/ivtv/ivtvfb.c
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@ -836,7 +836,8 @@ static int ivtvfb_pan_display(struct fb_var_screeninfo *var, struct fb_info *inf
u32 osd_pan_index;
struct ivtv *itv = (struct ivtv *) info->par;
osd_pan_index = (var->xoffset + (var->yoffset * var->xres_virtual))*var->bits_per_pixel/8;
osd_pan_index = var->yoffset * info->fix.line_length
+ var->xoffset * info->var.bits_per_pixel / 8;
write_reg(osd_pan_index, 0x02A0C);
/* Pass this info back the yuv handler */