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PCI: iproc: Set affinity mask on MSI interrupts

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[ Upstream commit eb7eacaa5b9e4f665bd08d416c8f88e63d2f123c ]

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: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Mark Tomlinson 2020-08-03 15:52:40 +12:00 committed by Greg Kroah-Hartman
parent 66da98b20b
commit 598e40fe3d
1 changed files with 9 additions and 4 deletions
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13
drivers/pci/host/pcie-iproc-msi.c
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@ -217,15 +217,20 @@ static int iproc_msi_irq_set_affinity(struct irq_data *data,
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,