libertas: use spin_is_locked() instead of spin_trylock() in lbs_interrupt()
We get scary warnings on UP if we use spin_trylock() and find, as we hoped, that the lock in question is already locked. Signed-off-by: David Woodhouse <dwmw2@infradead.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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@ -1414,8 +1414,7 @@ void lbs_interrupt(struct lbs_private *priv)
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lbs_deb_thread("lbs_interrupt: intcounter=%d\n", priv->intcounter);
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if (spin_trylock(&priv->driver_lock)) {
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spin_unlock(&priv->driver_lock);
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if (!spin_is_locked(&priv->driver_lock)) {
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printk(KERN_CRIT "%s called without driver_lock held\n", __func__);
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WARN_ON(1);
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}
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