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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>
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3 changed files with 16 additions and 1 deletions
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@ -649,6 +649,7 @@ extern long vt_compat_ioctl(struct tty_struct *tty,
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/* tty_mutex.c */
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/* functions for preparation of BKL removal */
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extern void __lockfunc tty_lock(struct tty_struct *tty);
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extern int tty_lock_interruptible(struct tty_struct *tty);
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extern void __lockfunc tty_unlock(struct tty_struct *tty);
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extern void __lockfunc tty_lock_slave(struct tty_struct *tty);
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extern void __lockfunc tty_unlock_slave(struct tty_struct *tty);
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