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authorPeter Hurley <peter@hurleysoftware.com>2016-01-09 21:13:44 -0800
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2016-01-26 23:17:54 -0800
commit0bfd464d3fdd5bb322f9cace4cc47f1796545cf7 (patch)
tree39464f856fd4dc6b58c31e2cfbbbb882ce3b7ec1 /include/linux
parent92e963f50fc74041b5e9e744c330dca48e04f08d (diff)
tty: Wait interruptibly for tty lock on reopen
Allow a signal to interrupt the wait for a tty reopen; eg., if the tty has starting final close and is waiting for the device to drain. Signed-off-by: Peter Hurley <peter@hurleysoftware.com> Cc: stable <stable@vger.kernel.org> # 4.4 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/linux')
-rw-r--r--include/linux/tty.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/tty.h b/include/linux/tty.h
index 2fd8708ea888..d9fb4b043f56 100644
--- a/include/linux/tty.h
+++ b/include/linux/tty.h
@@ -649,6 +649,7 @@ extern long vt_compat_ioctl(struct tty_struct *tty,
/* tty_mutex.c */
/* functions for preparation of BKL removal */
extern void __lockfunc tty_lock(struct tty_struct *tty);
+extern int tty_lock_interruptible(struct tty_struct *tty);
extern void __lockfunc tty_unlock(struct tty_struct *tty);
extern void __lockfunc tty_lock_slave(struct tty_struct *tty);
extern void __lockfunc tty_unlock_slave(struct tty_struct *tty);