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authorMarc Zyngier <marc.zyngier@arm.com>2018-05-27 18:39:55 +0300
committerMarc Zyngier <marc.zyngier@arm.com>2018-07-16 16:22:19 +0300
commit147c8f376e5526ebfaf2827734916414db52a3c4 (patch)
treee119d83c2ae863e4e8277aad6f42e1111a104d49 /drivers/irqchip/irq-gic-v3-its-platform-msi.c
parentfe8e93504ce870cb60b5dca97d13d861a53d7353 (diff)
downloadlinux-147c8f376e5526ebfaf2827734916414db52a3c4.tar.xz
irqchip/gic-v3-its: Move minimum LPI requirements to individual busses
At the moment, the core ITS driver imposes the allocation to be in chunks of 32. As we want to relax this on a per bus basis, let's move the the the allocation constraints to each bus. No functionnal change. Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Diffstat (limited to 'drivers/irqchip/irq-gic-v3-its-platform-msi.c')
-rw-r--r--drivers/irqchip/irq-gic-v3-its-platform-msi.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/irqchip/irq-gic-v3-its-platform-msi.c b/drivers/irqchip/irq-gic-v3-its-platform-msi.c
index 8881a053c173..7b8e87b493fe 100644
--- a/drivers/irqchip/irq-gic-v3-its-platform-msi.c
+++ b/drivers/irqchip/irq-gic-v3-its-platform-msi.c
@@ -73,6 +73,8 @@ static int its_pmsi_prepare(struct irq_domain *domain, struct device *dev,
/* ITS specific DeviceID, as the core ITS ignores dev. */
info->scratchpad[0].ul = dev_id;
+ /* Allocate at least 32 MSIs, and always as a power of 2 */
+ nvec = max_t(int, 32, roundup_pow_of_two(nvec));
return msi_info->ops->msi_prepare(domain->parent,
dev, nvec, info);
}