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authorDave Airlie <airlied@redhat.com>2010-12-21 01:41:17 +0000
committerPaul Mundt <lethal@linux-sh.org>2011-03-22 17:22:19 +0900
commit32b98bf8752c5483481f77d48934aba26c967fcd (patch)
tree4c06935ff1b8d6393802a38635377a0d34149187
parent4295f9bf74a885da390abc49a3b42a011c1bb890 (diff)
fbcon: fix situation where fbcon gets deinitialised and can't reinit.
Situation as follow: 2 GPUs + vesafb + kms. GPU 1 is primary, vesafb binds to it as fb0 radeon loads GPU 0 loads as fb1 GPU 1 loads, vesafb gets kicked off which causes fb0 to unbind console, which causes the dummy console to rebind. this means fbcon_deinit gets called, which calls fbcon_exit since the console isn't bound anymore and we set fbcon_has_exited. GPU 1 creates a new fb0 which is primary and we want to be console. fbcon_fb_registered gets called sets the primary up and calls set_con2fb_map, however as fbcon_has_exited is set nothing further ever happens. This patch bypasses the fbcon_has_exited and checks if the console is unbound, if its unbound it calls the fbcon_takeover which calls the vt layer to call the fbcon_startup method and everthing works. Signed-off-by: Dave Airlie <airlied@redhat.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
-rw-r--r--drivers/video/console/fbcon.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/video/console/fbcon.c b/drivers/video/console/fbcon.c
index 9c092b8d64e6..c58393402da2 100644
--- a/drivers/video/console/fbcon.c
+++ b/drivers/video/console/fbcon.c
@@ -823,10 +823,10 @@ static int set_con2fb_map(int unit, int newidx, int user)
if (oldidx == newidx)
return 0;
- if (!info || fbcon_has_exited)
+ if (!info)
return -EINVAL;
- if (!err && !search_for_mapped_con()) {
+ if (!search_for_mapped_con() || !con_is_bound(&fb_con)) {
info_idx = newidx;
return fbcon_takeover(0);
}