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Revert "genirq: Use irqd_get_trigger_type to compare the trigger type for shared IRQs"

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This reverts commit 9d0273bb1c which is
commit 382bd4de61 upstream.

It causes too many problems with the stable tree, and would require too
many other things to be backported, so just revert it.

Reported-by: Guenter Roeck <linux@roeck-us.net>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Hans de Goede <hdegoede@redhat.com>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
This commit is contained in:
Greg Kroah-Hartman
2018-03-30 10:53:44 +02:00
committed by Greg Kroah-Hartman
parent 38033e9f37
commit 4175c4528e
1 changed files with 1 additions and 3 deletions
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4
kernel/irq/manage.c
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@@ -1189,10 +1189,8 @@ __setup_irq(unsigned int irq, struct irq_desc *desc, struct irqaction *new)
* set the trigger type must match. Also all must
* agree on ONESHOT.
*/
unsigned int oldtype = irqd_get_trigger_type(&desc->irq_data);
if (!((old->flags & new->flags) & IRQF_SHARED) ||
(oldtype != (new->flags & IRQF_TRIGGER_MASK)) ||
((old->flags ^ new->flags) & IRQF_TRIGGER_MASK) ||
((old->flags ^ new->flags) & IRQF_ONESHOT))
goto mismatch;