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path: root/drivers/video/fbdev/i740fb.c
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Diffstat (limited to 'drivers/video/fbdev/i740fb.c')
-rw-r--r--drivers/video/fbdev/i740fb.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/video/fbdev/i740fb.c b/drivers/video/fbdev/i740fb.c
index dd45ea8203be..09dd85553d4f 100644
--- a/drivers/video/fbdev/i740fb.c
+++ b/drivers/video/fbdev/i740fb.c
@@ -657,6 +657,9 @@ static int i740fb_decode_var(const struct fb_var_screeninfo *var,
static int i740fb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
{
+ if (!var->pixclock)
+ return -EINVAL;
+
switch (var->bits_per_pixel) {
case 8:
var->red.offset = var->green.offset = var->blue.offset = 0;