Commit 45725e0f authored Jan 29, 2019 by Marc Zyngier

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: 38dd7c49 ("irqchip/gic-v3-its: Drop chunk allocation compatibility")
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>

parent 9791ec7d

drivers/irqchip/irq-gic-v3-its.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -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;