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| author |   Marc Zyngier <marc.zyngier@arm.com> | 2019-01-29 15:19:23 +0000 |
|---|---|---|
| committer | Marc Zyngier <marc.zyngier@arm.com> | 2019-01-29 15:48:51 +0000 |
| commit | 45725e0fc3e7fe52fedb94f59806ec50e9618682 (patch) | |
| tree | cb491f1069fca17cfd03bdf93b8f34d7eda8c1ad /drivers/irqchip | |
| parent | irqchip/gic-v3-its: Plug allocation race for devices sharing a DevID (diff) | |
| download | linux-dev-45725e0fc3e7fe52fedb94f59806ec50e9618682.tar.xz linux-dev-45725e0fc3e7fe52fedb94f59806ec50e9618682.zip | |
irqchip/gic-v3-its: Gracefully fail on LPI exhaustion
In the unlikely event that we cannot find any available LPI in the
system, we should gracefully return an error instead of carrying
on with no LPI allocated at all.
Fixes: 38dd7c494cf6 ("irqchip/gic-v3-its: Drop chunk allocation compatibility")
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Diffstat (limited to 'drivers/irqchip')
| -rw-r--r-- | drivers/irqchip/irq-gic-v3-its.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/irqchip/irq-gic-v3-its.c b/drivers/irqchip/irq-gic-v3-its.c index f25ec92f23ee..c3aba3fc818d 100644 --- a/drivers/irqchip/irq-gic-v3-its.c +++ b/drivers/irqchip/irq-gic-v3-its.c @@ -1586,6 +1586,9 @@ static unsigned long *its_lpi_alloc(int nr_irqs, u32 *base, int *nr_ids) nr_irqs /= 2; } while (nr_irqs > 0); + if (!nr_irqs) + err = -ENOSPC; + if (err) goto out; |