pm24.git/drivers/tty/vt/vt_ioctl.c, branch v3.9

drivers/tty/vt/vt_ioctl.c: Include for pm_set_vt_switch

2012-11-21T23:19:52Z

C files should include the header files that prototype their functions. This keeps the types in sync, and eliminates warnings from GCC (-Wmissing-prototypes) and Sparse (-Wdecl). Signed-off-by: Josh Triplett Signed-off-by: Greg Kroah-Hartman

vt: fix race in vt_waitactive()

2012-07-26T20:37:02Z

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 Acked-by: Alan Cox Signed-off-by: Greg Kroah-Hartman

vt: push the tty_lock down into the map handling

2012-04-24T23:14:14Z

When we do this it becomes clear the lock we should be holding is the vc lock, and in fact many of our other helpers are properly invoked this way. We don't at this point guarantee not to race the keyboard code but the results of that appear harmless and that was true before we started as well. We now have no users of tty_lock in the console driver... Signed-off-by: Alan Cox Signed-off-by: Greg Kroah-Hartman

vt: waitevent is self locked so drop the tty_lock

2012-03-08T19:10:28Z

Signed-off-by: Alan Cox Signed-off-by: Greg Kroah-Hartman

vt: push down tioclinux cases

2012-03-08T19:10:27Z

Some of this ventures into selection which is still a complete lost cause. We are not making it any worse. It's completely busted anyway. Signed-off-by: Alan Cox Signed-off-by: Greg Kroah-Hartman

vt: push down the tty lock so we can see what is left to tackle

2012-03-08T19:10:27Z

At this point we have the tty_lock guarding a couple of oddities, plus the translation and unimap still. We also extend the console_lock in a couple of spots where coverage is wrong and switch vcs_open to use the right lock ! [Fixed the locking issue Jiri reported] Signed-off-by: Alan Cox Signed-off-by: Greg Kroah-Hartman

vt:tackle kbd_table

2012-03-08T18:50:35Z

Keyboard struct lifetime is easy, but the locking is not and is completely ignored by the existing code. Tackle this one head on - Make the kbd_table private so we can run down all direct users - Hoick the relevant ioctl handlers into the keyboard layer - Lock them with the keyboard lock so they don't change mid keypress - Add helpers for things like console stop/start so we isolate the poking around properly - Tweak the braille console so it still builds There are a couple of FIXME locking cases left for ioctls that are so hideous they should be addressed in a later patch. After this patch the kbd_table is private and all the keyboard jiggery pokery is in one place. This update fixes speakup and also a memory leak in the original. Signed-off-by: Alan Cox Signed-off-by: Greg Kroah-Hartman

vt: lock the accent table

2012-02-24T21:59:34Z

First step to debletcherising the vt console layer - pick a victim and fix the locking This is a nice simple object with its own rules so lets pick it out for treatment. The user of the table already has a lock so we will also use the same lock for updates. Signed-off-by: Alan Cox Signed-off-by: Greg Kroah-Hartman

drivers/tty/vt/vt_ioctl.c: fix KDFONTOP 32bit compatibility layer

2012-02-04T00:16:41Z

KDFONTOP(GET) currently fails with EIO when being run in a 32bit userland with a 64bit kernel if the font width is not 8. This is because of the setting of the KD_FONT_FLAG_OLD flag, which makes con_font_get return EIO in such case. This flag should *not* be set for KDFONTOP, since it's actually the whole point of this flag (see comment in con_font_set for instance). Signed-off-by: Samuel Thibault Reviewed-by: Arnd Bergmann Cc: Greg Kroah-Hartman Cc: Arthur Taylor Cc: Jiri Slaby Cc: Jiri Olsa Cc: Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

tty: remove invalid location line in file header

2011-04-19T23:33:36Z

remove invalid location line in each file header after location moved from driver/char to driver/tty Signed-off-by: Jovi Zhang Signed-off-by: Greg Kroah-Hartman