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authorJesse Barnes <jbarnes@virtuousgeek.org>2010-06-23 12:56:12 -0700
committerGreg Kroah-Hartman <gregkh@suse.de>2010-08-10 13:47:40 -0700
commit8fd4bd22350784d5b2fe9274f6790ba353976415 (patch)
treea74d39c50f9a1ca74cfb47b08201c3a3d1e0baea /include/linux/fb.h
parent26df6d13406d1a53b0bda08bd712f1924affd7cd (diff)
downloadlinux-linaro-stable-8fd4bd22350784d5b2fe9274f6790ba353976415.tar.gz
vt/console: try harder to print output when panicing
Jesse's initial patch commit said: "At panic time (i.e. when oops_in_progress is set) we should try a bit harder to update the screen and make sure output gets to the VT, since some drivers are capable of flipping back to it. So make sure we try to unblank and update the display if called from a panic context." I've enhanced this to add a flag to the vc that console layer can set to indicate they want this behaviour to occur. This also adds support to fbcon for that flag and adds an fb flag for drivers to indicate they want to use the support. It enables this for KMS drivers. Signed-off-by: Dave Airlie <airlied@redhat.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org> Acked-by: James Simmons <jsimmons@infradead.org> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'include/linux/fb.h')
-rw-r--r--include/linux/fb.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/fb.h b/include/linux/fb.h
index 0c5659c41b01..f0268deca658 100644
--- a/include/linux/fb.h
+++ b/include/linux/fb.h
@@ -825,6 +825,10 @@ struct fb_tile_ops {
*/
#define FBINFO_BE_MATH 0x100000
+/* report to the VT layer that this fb driver can accept forced console
+ output like oopses */
+#define FBINFO_CAN_FORCE_OUTPUT 0x200000
+
struct fb_info {
int node;
int flags;