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Char: mxser_new, fix recursive locking

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Signed-off-by: Jan "Yenya" Kasprzak <[email protected]>
Acked-by: Jiri Slaby <[email protected]>
Acked-by: Alan Cox <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Jan Yenya Kasprzak
2007-04-24 08:23:07 -07:00
committed by Linus Torvalds
parent 3d124cbba3
commit 67d2bc58af
1 changed files with 7 additions and 0 deletions
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drivers/char/mxser_new.c
+7
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@@ -2230,7 +2230,14 @@ end_intr:
port->mon_data.rxcnt += cnt;
port->mon_data.up_rxcnt += cnt;
/*
* We are called from an interrupt context with &port->slock
* being held. Drop it temporarily in order to prevent
* recursive locking.
*/
spin_unlock(&port->slock);
tty_flip_buffer_push(tty);
spin_lock(&port->slock);
}
static void mxser_transmit_chars(struct mxser_port *port)