fbdev: Make pixel_to_pat() failure mode more friendly
If we accidentally pass an incorrect bpp value to pixel_to_pat(),
it panics. This is pretty useless, as we generally have the various
console locks held at that point, so nothing will be displayed,
and there is no reason to make this a fatal event.
Let's WARN instead.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
diff --git a/drivers/video/fb_draw.h b/drivers/video/fb_draw.h
index 04c01fa..624ee11 100644
--- a/drivers/video/fb_draw.h
+++ b/drivers/video/fb_draw.h
@@ -3,6 +3,7 @@
#include <asm/types.h>
#include <linux/fb.h>
+#include <linux/bug.h>
/*
* Compose two values, using a bitmask as decision value
@@ -41,7 +42,8 @@
case 32:
return 0x0000000100000001ul*pixel;
default:
- panic("pixel_to_pat(): unsupported pixelformat\n");
+ WARN(1, "pixel_to_pat(): unsupported pixelformat %d\n", bpp);
+ return 0;
}
}
#else
@@ -66,7 +68,8 @@
case 32:
return 0x00000001ul*pixel;
default:
- panic("pixel_to_pat(): unsupported pixelformat\n");
+ WARN(1, "pixel_to_pat(): unsupported pixelformat %d\n", bpp);
+ return 0;
}
}
#endif