On Fri, Jan 25, 2013 at 2:43 AM, Dave Airlie airl...@gmail.com wrote:
Okay so Alan's patch handled the case where there was no registered fbcon,
however the other path entered in set_con2fb_map pit.
In there we called fbcon_takeover, but we also took the console lock in a
couple
of places. So push the console lock out to the callers of set_con2fb_map,
this means fbmem and switcheroo needed to take the lock around the fb notifier
entry points that lead to this.
This should fix the efifb regression seen by Maarten.
Signed-off-by: Dave Airlie airl...@redhat.com
---
drivers/gpu/vga/vga_switcheroo.c | 3 +++
drivers/video/console/fbcon.c| 11 ---
drivers/video/fbmem.c| 2 ++
3 files changed, 13 insertions(+), 3 deletions(-)
[cut]
ret = vgasr_priv.handler-switchto(new_client-id);
diff --git a/drivers/video/console/fbcon.c b/drivers/video/console/fbcon.c
index 2aef9ca..2e2d959 100644
--- a/drivers/video/console/fbcon.c
+++ b/drivers/video/console/fbcon.c
@@ -842,6 +842,8 @@ static void con2fb_init_display(struct vc_data *vc,
struct fb_info *info,
*
* Maps a virtual console @unit to a frame buffer device
* @newidx.
+ *
+ * This should be called with the console lock held.
*/
static int set_con2fb_map(int unit, int newidx, int user)
{
What about throwing a WARN_CONSOLE_UNLOCKED(); in here to make sure
this new rule is obeyed?
-Daniel
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Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch
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