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| author | Marc Zyngier <marc.zyngier@arm.com> | 2018-06-22 10:52:49 +0100 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2018-06-22 14:22:00 +0200 |
| commit | 893fbfff976cd069f2e60c3b186dbe3f85504db2 (patch) | |
| tree | 2dc3e37460ca1964f3de396d52dc8982266e7184 /drivers/irqchip | |
| parent | 72a8edc2d9134c2895eac2fec5eecf8230a05c96 (diff) | |
| download | linux-893fbfff976cd069f2e60c3b186dbe3f85504db2.tar.gz linux-893fbfff976cd069f2e60c3b186dbe3f85504db2.tar.bz2 linux-893fbfff976cd069f2e60c3b186dbe3f85504db2.zip | |
irqchip/ls-scfg-msi: Fix MSI affinity handling
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. Also prevent the driver from
messing with the internals of the affinity setting infrastructure.
Reported-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Cc: Jason Cooper <jason@lakedaemon.net>
Cc: Yang Yingliang <yangyingliang@huawei.com>
Cc: Sumit Garg <sumit.garg@linaro.org>
Link: https://lkml.kernel.org/r/20180622095254.5906-3-marc.zyngier@arm.com
Diffstat (limited to 'drivers/irqchip')
| -rw-r--r-- | drivers/irqchip/irq-ls-scfg-msi.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/drivers/irqchip/irq-ls-scfg-msi.c b/drivers/irqchip/irq-ls-scfg-msi.c index 1ec3bfe56693..c671b3212010 100644 --- a/drivers/irqchip/irq-ls-scfg-msi.c +++ b/drivers/irqchip/irq-ls-scfg-msi.c @@ -93,8 +93,12 @@ static void ls_scfg_msi_compose_msg(struct irq_data *data, struct msi_msg *msg) msg->address_lo = lower_32_bits(msi_data->msiir_addr); msg->data = data->hwirq; - if (msi_affinity_flag) - msg->data |= cpumask_first(data->common->affinity); + if (msi_affinity_flag) { + const struct cpumask *mask; + + mask = irq_data_get_effective_affinity_mask(data); + msg->data |= cpumask_first(mask); + } iommu_dma_map_msi_msg(data->irq, msg); } @@ -121,7 +125,7 @@ static int ls_scfg_msi_set_affinity(struct irq_data *irq_data, return -EINVAL; } - cpumask_copy(irq_data->common->affinity, mask); + irq_data_update_effective_affinity(irq_data, cpumask_of(cpu)); return IRQ_SET_MASK_OK; } |