[PATCH 2/6] irqchip/ls-scfg-msi: Fix MSI affinity handling

From: Marc Zyngier
Date: Tue Jun 19 2018 - 07:57:14 EST


The ls-scfs-msi driver is not dealing with the effective affinity
as it should. Let's fix that, and make it clear that the effective
affinity is restricted to a single CPU.

Reported-by: Alexandre Belloni <alexandre.belloni@xxxxxxxxxxx>
Signed-off-by: Marc Zyngier <marc.zyngier@xxxxxxx>
---
drivers/irqchip/irq-ls-scfg-msi.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/irqchip/irq-ls-scfg-msi.c b/drivers/irqchip/irq-ls-scfg-msi.c
index 1ec3bfe56693..2811cc53e425 100644
--- a/drivers/irqchip/irq-ls-scfg-msi.c
+++ b/drivers/irqchip/irq-ls-scfg-msi.c
@@ -121,7 +121,8 @@ static int ls_scfg_msi_set_affinity(struct irq_data *irq_data,
return -EINVAL;
}

- cpumask_copy(irq_data->common->affinity, mask);
+ cpumask_copy(irq_data->common->affinity, cpumask_of(cpu));
+ irq_data_update_effective_affinity(irq_data, cpumask_of(cpu));

return IRQ_SET_MASK_OK;
}
--
2.17.1