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acornfb: Dont BUG() on invalid pan parameters

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The driver currently BUG()s if the pan parameters passed directly from
userspace are invalid. Return -EINVAL instead.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
This commit is contained in:
Laurent Pinchart 2011-05-25 13:43:53 +02:00
parent 2e1e5979bb
commit 3846e93a65
1 changed files with 2 additions and 1 deletions
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3
drivers/video/acornfb.c
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@ -852,7 +852,8 @@ acornfb_pan_display(struct fb_var_screeninfo *var, struct fb_info *info)
if (!(var->vmode & FB_VMODE_YWRAP))
y_bottom += var->yres;
BUG_ON(y_bottom > var->yres_virtual);
if (y_bottom > var->yres_virtual)
return -EINVAL;
acornfb_update_dma(info, var);