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| author | Jiri Slaby <jslaby@suse.cz> | 2011-04-20 10:43:15 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-04-25 23:19:11 +0200 |
| commit | 0ad7c9af3e1cbb97082062266705d6cb5fb207ee (patch) | |
| tree | 7934df8bfa67d18d21e9d9ee7f9efc6a431854a6 /drivers/tty/serial | |
| parent | Char: nozomi, remove useless tty_sem (diff) | |
| download | linux-0ad7c9af3e1cbb97082062266705d6cb5fb207ee.tar.xz linux-0ad7c9af3e1cbb97082062266705d6cb5fb207ee.zip | |
Char: moxa, fix locking in moxa_write
moxa_write can be called from atomic context with irqs disabled (from
ppp_async_push). Don't enable interrupts by spin_unlock_bh as this
might cause deadlocks in the ppp layer.
Instead, use irqsave/irqrestore spin_lock functions.
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/tty/serial')
0 files changed, 0 insertions, 0 deletions