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authorBenjamin Herrenschmidt <benh@kernel.crashing.org>2012-07-24 12:19:13 +0400
committerFlorian Tobias Schandinat <FlorianSchandinat@gmx.de>2012-07-29 16:25:06 +0400
commit3f6a5580464bf000649f981970192c6c7fe739de (patch)
treecf417f11e52aadf99a5a17afa4892f8cdda2a78d /drivers/video/fb_draw.h
parentf7c848b6ef31af09925bb6f4c79e236ca9f94ed9 (diff)
downloadlinux-3f6a5580464bf000649f981970192c6c7fe739de.tar.xz
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>
Diffstat (limited to 'drivers/video/fb_draw.h')
-rw-r--r--drivers/video/fb_draw.h7
1 files changed, 5 insertions, 2 deletions
diff --git a/drivers/video/fb_draw.h b/drivers/video/fb_draw.h
index 04c01faaf772..624ee115f129 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 @@ pixel_to_pat( u32 bpp, u32 pixel)
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 @@ pixel_to_pat( u32 bpp, u32 pixel)
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