From e142a31da34b42458e10026b554e66127739cf23 Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Tue, 1 Jun 2010 22:53:10 +0200 Subject: tty: release BTM while sleeping in block_til_ready Most tty drivers may block while opening a device. Since this possibly depends on another thread closing it first and both threads may need the BTM, we need to release it here. Signed-off-by: Arnd Bergmann Cc: Alan Cox Signed-off-by: Greg Kroah-Hartman --- drivers/char/synclink_gt.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'drivers/char/synclink_gt.c') diff --git a/drivers/char/synclink_gt.c b/drivers/char/synclink_gt.c index 5a602eb7cd2d..fef80cfcab5c 100644 --- a/drivers/char/synclink_gt.c +++ b/drivers/char/synclink_gt.c @@ -3244,7 +3244,9 @@ static int block_til_ready(struct tty_struct *tty, struct file *filp, } DBGINFO(("%s block_til_ready wait\n", tty->driver->name)); + tty_unlock(); schedule(); + tty_lock(); } set_current_state(TASK_RUNNING); -- cgit v1.2.3-58-ga151