genirq: Convert irq_desc.lock to raw_spinlock
Convert locks which cannot be sleeping locks in preempt-rt to
raw_spinlocks.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Acked-by: Ingo Molnar <mingo@elte.hu>
diff --git a/arch/ia64/kernel/iosapic.c b/arch/ia64/kernel/iosapic.c
index dab4d39..95ac77a 100644
--- a/arch/ia64/kernel/iosapic.c
+++ b/arch/ia64/kernel/iosapic.c
@@ -793,12 +793,12 @@
goto unlock_iosapic_lock;
}
- spin_lock(&irq_desc[irq].lock);
+ raw_spin_lock(&irq_desc[irq].lock);
dest = get_target_cpu(gsi, irq);
dmode = choose_dmode();
err = register_intr(gsi, irq, dmode, polarity, trigger);
if (err < 0) {
- spin_unlock(&irq_desc[irq].lock);
+ raw_spin_unlock(&irq_desc[irq].lock);
irq = err;
goto unlock_iosapic_lock;
}
@@ -817,7 +817,7 @@
(polarity == IOSAPIC_POL_HIGH ? "high" : "low"),
cpu_logical_id(dest), dest, irq_to_vector(irq));
- spin_unlock(&irq_desc[irq].lock);
+ raw_spin_unlock(&irq_desc[irq].lock);
unlock_iosapic_lock:
spin_unlock_irqrestore(&iosapic_lock, flags);
return irq;