genirq: record IRQ_LEVEL in irq_desc[]
Impact: fix __irq_set_trigger() for IRQ_LEVEL
When recording the irq trigger type, let's also make sure
that IRQ_LEVEL gets set correctly.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c
index 801addd..46953a0 100644
--- a/kernel/irq/manage.c
+++ b/kernel/irq/manage.c
@@ -370,16 +370,18 @@
return 0;
}
- ret = chip->set_type(irq, flags & IRQF_TRIGGER_MASK);
+ /* caller masked out all except trigger mode flags */
+ ret = chip->set_type(irq, flags);
if (ret)
pr_err("setting trigger mode %d for irq %u failed (%pF)\n",
- (int)(flags & IRQF_TRIGGER_MASK),
- irq, chip->set_type);
+ (int)flags, irq, chip->set_type);
else {
+ if (flags & (IRQ_TYPE_LEVEL_LOW | IRQ_TYPE_LEVEL_HIGH))
+ flags |= IRQ_LEVEL;
/* note that IRQF_TRIGGER_MASK == IRQ_TYPE_SENSE_MASK */
- desc->status &= ~IRQ_TYPE_SENSE_MASK;
- desc->status |= flags & IRQ_TYPE_SENSE_MASK;
+ desc->status &= ~(IRQ_LEVEL | IRQ_TYPE_SENSE_MASK);
+ desc->status |= flags;
}
return ret;
@@ -459,7 +461,8 @@
/* Setup the type (level, edge polarity) if configured: */
if (new->flags & IRQF_TRIGGER_MASK) {
- ret = __irq_set_trigger(desc, irq, new->flags);
+ ret = __irq_set_trigger(desc, irq,
+ new->flags & IRQF_TRIGGER_MASK);
if (ret) {
spin_unlock_irqrestore(&desc->lock, flags);