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[03/29] acornfb: use display information in info not in var for panning

Message ID 1306364301-8195-4-git-send-email-laurent.pinchart@ideasonboard.com (mailing list archive)
State New, archived
Headers show

Commit Message

Laurent Pinchart May 25, 2011, 10:57 p.m. UTC 
We must not use any information in the passed var besides xoffset,
yoffset and vmode as otherwise applications might abuse it.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
---
 drivers/video/acornfb.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
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Patch

diff --git a/drivers/video/acornfb.c b/drivers/video/acornfb.c
index 3bacc12..b303f17 100644
--- a/drivers/video/acornfb.c
+++ b/drivers/video/acornfb.c
@@ -850,9 +850,9 @@  acornfb_pan_display(struct fb_var_screeninfo *var, struct fb_info *info)
 	u_int y_bottom = var->yoffset;
 
 	if (!(var->vmode & FB_VMODE_YWRAP))
-		y_bottom += var->yres;
+		y_bottom += info->var.yres;
 
-	if (y_bottom > var->yres_virtual)
+	if (y_bottom > info->var.yres_virtual)
 		return -EINVAL;
 
 	acornfb_update_dma(info, var);