add led

hc

2024-05-10 10ebd8556b7990499c896a550e3d416b444211e6

 kernel/drivers/video/fbdev/geode/lxfb_core.c
..
..
@@ -234,6 +234,9 @@
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 static int lxfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
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 {
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+	if (!var->pixclock)
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+		return -EINVAL;
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+
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 	if (var->xres > 1920 || var->yres > 1440)
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 		return -EINVAL;
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