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| author | Peter Hurley <peter@hurleysoftware.com> | 2013-03-06 07:20:54 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-03-15 14:02:32 -0700 |
| commit | 20cc225bab6709408840e4400cd1a5c2b28c7a52 (patch) | |
| tree | 5e722781b19e2644fe94a035e4719ed4a821842b /drivers/tty/tty_io.c | |
| parent | ea648a47e83d7cda0832f96de215464e2c35b2c2 (diff) | |
| download | linux-20cc225bab6709408840e4400cd1a5c2b28c7a52.tar.gz linux-20cc225bab6709408840e4400cd1a5c2b28c7a52.tar.bz2 linux-20cc225bab6709408840e4400cd1a5c2b28c7a52.zip | |
tty: Fix spinlock flavor in non-atomic __tty_hangup()
__tty_hangup() and tty_vhangup() cannot be called from atomic context,
so locks do not need to preserve the interrupt state (although,
still disable interrupts).
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Acked-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty/tty_io.c')
| -rw-r--r-- | drivers/tty/tty_io.c | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/drivers/tty/tty_io.c b/drivers/tty/tty_io.c index 706c23b9cb95..fb50442fd2a4 100644 --- a/drivers/tty/tty_io.c +++ b/drivers/tty/tty_io.c @@ -605,7 +605,6 @@ static void __tty_hangup(struct tty_struct *tty) struct file *filp, *f = NULL; struct tty_file_private *priv; int closecount = 0, n; - unsigned long flags; int refs; if (!tty) @@ -654,7 +653,7 @@ static void __tty_hangup(struct tty_struct *tty) while (refs--) tty_kref_put(tty); - spin_lock_irqsave(&tty->ctrl_lock, flags); + spin_lock_irq(&tty->ctrl_lock); clear_bit(TTY_THROTTLED, &tty->flags); clear_bit(TTY_PUSH, &tty->flags); clear_bit(TTY_DO_WRITE_WAKEUP, &tty->flags); @@ -663,7 +662,7 @@ static void __tty_hangup(struct tty_struct *tty) tty->session = NULL; tty->pgrp = NULL; tty->ctrl_status = 0; - spin_unlock_irqrestore(&tty->ctrl_lock, flags); + spin_unlock_irq(&tty->ctrl_lock); /* * If one of the devices matches a console pointer, we |