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| author | Mark Tomlinson <mark.tomlinson@alliedtelesis.co.nz> | 2020-08-03 05:52:40 +0200 |
|---|---|---|
| committer | Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> | 2020-09-08 23:04:27 +0200 |
| commit | eb7eacaa5b9e4f665bd08d416c8f88e63d2f123c (patch) | |
| tree | 1f1ec5058a14316c3882eadf016e6219b7c72193 /drivers/pci | |
| parent | Linux 5.9-rc1 (diff) | |
| download | linux-eb7eacaa5b9e4f665bd08d416c8f88e63d2f123c.tar.xz linux-eb7eacaa5b9e4f665bd08d416c8f88e63d2f123c.zip | |
PCI: iproc: Set affinity mask on MSI interrupts
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>
Diffstat (limited to 'drivers/pci')
| -rw-r--r-- | drivers/pci/controller/pcie-iproc-msi.c | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/drivers/pci/controller/pcie-iproc-msi.c b/drivers/pci/controller/pcie-iproc-msi.c index 3176ad3ab0e5..908475d27e0e 100644 --- a/drivers/pci/controller/pcie-iproc-msi.c +++ b/drivers/pci/controller/pcie-iproc-msi.c @@ -209,15 +209,20 @@ 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, |