Rabin Vincent a7b12929be vt: fix race in vt_waitactive() ... pm_restore_console() is called from the suspend/resume path, and this calls vt_move_to_console(), which calls vt_waitactive(). There's a race in this path which causes the process which requests the suspend to sleep indefinitely waiting for an event which already happened: P1 P2 vt_move_to_console() set_console() schedule_console_callback() vt_waitactive() check n == fg_console +1 console_callback() switch_screen() vt_event_post() // no waiters vt_event_wait() // forever Fix the race by ensuring we're registered for the event before we check if it's already completed. Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com> Acked-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2012-07-26 13:37:02 -07:00
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.gitignore
consolemap.c
cp437.uni
defkeymap.c_shipped
defkeymap.map
keyboard.c
Makefile
selection.c
vc_screen.c
vt_ioctl.c
vt.c