From: Mark Tomlinson <mark.tomlinson@alliedtelesis.co.nz>
Date: Mon, 3 Aug 2020 15:52:40 +1200
Subject: PCI: iproc: Set affinity mask on MSI interrupts
Git-commit: eb7eacaa5b9e4f665bd08d416c8f88e63d2f123c
Patch-mainline: 5.10-rc1
References: git-fixes

The core interrupt code expects the irq_set_affinity call to update the
effective affinity for the interrupt. This was not being done, so update
iproc_msi_irq_set_affinity() to do so.

Link: https://lore.kernel.org/r/20200803035241.7737-1-mark.tomlinson@alliedtelesis.co.nz
Fixes: 3bc2b2348835 ("PCI: iproc: Add iProc PCIe MSI support")
Signed-off-by: Mark Tomlinson <mark.tomlinson@alliedtelesis.co.nz>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Ray Jui <ray.jui@broadcom.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 drivers/pci/host/pcie-iproc-msi.c |   13 +++++++++----
 1 file changed, 9 insertions(+), 4 deletions(-)

--- a/drivers/pci/host/pcie-iproc-msi.c
+++ b/drivers/pci/host/pcie-iproc-msi.c
@@ -217,15 +217,20 @@ static int iproc_msi_irq_set_affinity(st
 	struct iproc_msi *msi = irq_data_get_irq_chip_data(data);
 	int target_cpu = cpumask_first(mask);
 	int curr_cpu;
+	int ret;
 
 	curr_cpu = hwirq_to_cpu(msi, data->hwirq);
 	if (curr_cpu == target_cpu)
-		return IRQ_SET_MASK_OK_DONE;
+		ret = IRQ_SET_MASK_OK_DONE;
+	else {
+		/* steer MSI to the target CPU */
+		data->hwirq = hwirq_to_canonical_hwirq(msi, data->hwirq) + target_cpu;
+		ret = IRQ_SET_MASK_OK;
+	}
 
-	/* steer MSI to the target CPU */
-	data->hwirq = hwirq_to_canonical_hwirq(msi, data->hwirq) + target_cpu;
+	irq_data_update_effective_affinity(data, cpumask_of(target_cpu));
 
-	return IRQ_SET_MASK_OK;
+	return ret;
 }
 
 static void iproc_msi_irq_compose_msi_msg(struct irq_data *data,