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irqchip/gic-v3-its: Free collection mapping on device teardown 

We allocate the collection mapping on device creation, but somehow
free it on the irqdomain free path, which is pretty inconsistent
and has led to bugs in the past.

Move it to the point where we teardown the device, making the
alloc/free symetric.

Signed-off-by: Marc Zyngier <maz@kernel.org>
Reviewed-by: Zenghui Yu <yuzenghui@huawei.com>
Link: https://lore.kernel.org/r/20191108165805.3071-2-maz@kernel.org
This commit is contained in:
Marc Zyngier 2019-11-08 16:57:55 +00:00
parent bf93b04cd8
commit 898aa5ce61
1 changed files with 1 additions and 1 deletions
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2
drivers/irqchip/irq-gic-v3-its.c
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@ -2474,6 +2474,7 @@ static void its_free_device(struct its_device *its_dev)
raw_spin_lock_irqsave(&its_dev->its->lock, flags);
list_del(&its_dev->entry);
raw_spin_unlock_irqrestore(&its_dev->its->lock, flags);
kfree(its_dev->event_map.col_map);
kfree(its_dev->itt);
kfree(its_dev);
}
@ -2682,7 +2683,6 @@ static void its_irq_domain_free(struct irq_domain *domain, unsigned int virq,
its_lpi_free(its_dev->event_map.lpi_map,
its_dev->event_map.lpi_base,
its_dev->event_map.nr_lpis);
kfree(its_dev->event_map.col_map);
/* Unmap device/itt */
its_send_mapd(its_dev, 0);