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TTY: serial, use atomic_inc_return in ioc4_serial

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We want to know the value of the atomic variable in intr_connect after
the increment. But atomic_inc doesn't, per definition, return the
value.  It is just a pure coincidence that ia64 defines atomic_inc as
atomic_inc_return.

So fix this mistake by using atomic_inc_return properly.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Jiri Slaby 2012-03-05 14:52:08 +01:00 committed by Greg Kroah-Hartman
parent 885f8b0f8a
commit 4da2405606
1 changed files with 1 additions and 1 deletions
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2
drivers/tty/serial/ioc4_serial.c
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@ -975,7 +975,7 @@ intr_connect(struct ioc4_soft *soft, int type,
BUG_ON(!((type == IOC4_SIO_INTR_TYPE)
|| (type == IOC4_OTHER_INTR_TYPE)));
i = atomic_inc(&soft-> is_intr_type[type].is_num_intrs) - 1;
i = atomic_inc_return(&soft-> is_intr_type[type].is_num_intrs) - 1;
BUG_ON(!(i < MAX_IOC4_INTR_ENTS || (printk("i %d\n", i), 0)));
/* Save off the lower level interrupt handler */