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irqchip/gic-v4: Clear IRQ_DISABLE_UNLAZY again if mapping fails

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Should the call to irq_set_vcpu_affinity() fail at map time,
we should restore the normal lazy-disable behaviour instead
of staying with the eager disable that GICv4 requires.

Reported-by: Eric Auger <eric.auger@redhat.com>
Acked-by: Christoffer Dall <christoffer.dall@linaro.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
This commit is contained in:
Marc Zyngier 2017-11-10 09:00:41 +00:00
parent 4f8413a3a7
commit 90dc7122a3
1 changed files with 6 additions and 1 deletions
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7
drivers/irqchip/irq-gic-v4.c
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@ -177,6 +177,7 @@ int its_map_vlpi(int irq, struct its_vlpi_map *map)
.map = map,
},
};
int ret;
/*
* The host will never see that interrupt firing again, so it
@ -184,7 +185,11 @@ int its_map_vlpi(int irq, struct its_vlpi_map *map)
*/
irq_set_status_flags(irq, IRQ_DISABLE_UNLAZY);
return irq_set_vcpu_affinity(irq, &info);
ret = irq_set_vcpu_affinity(irq, &info);
if (ret)
irq_clear_status_flags(irq, IRQ_DISABLE_UNLAZY);
return ret;
}
int its_get_vlpi(int irq, struct its_vlpi_map *map)