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| author | Thomas Gleixner <tglx@linutronix.de> | 2016-09-14 20:53:26 +0200 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2016-09-14 20:53:26 +0200 |
| commit | 16217dc79dbc599b110dda26d0421df47904bba4 (patch) | |
| tree | 98df3c18b14284b8a6f8b04de12e0b7dde5a55fa /kernel/irq/msi.c | |
| parent | genirq: Expose interrupt information through sysfs (diff) | |
| parent | irqchip/gicv3-its: Use MADT ITS subtable to do PCI/MSI domain initialization (diff) | |
| download | linux-16217dc79dbc599b110dda26d0421df47904bba4.tar.xz linux-16217dc79dbc599b110dda26d0421df47904bba4.zip | |
Merge tag 'irqchip-4.9-1' of git://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms into irq/core
Merge the first drop of irqchip updates for 4.9 from Marc Zyngier:
- ACPI IORT core code
- IORT support for the GICv3 ITS
- A few of GIC cleanups
Diffstat (limited to 'kernel/irq/msi.c')
| -rw-r--r-- | kernel/irq/msi.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/kernel/irq/msi.c b/kernel/irq/msi.c index 54999350162c..19e9dfbe97fa 100644 --- a/kernel/irq/msi.c +++ b/kernel/irq/msi.c @@ -359,6 +359,17 @@ int msi_domain_alloc_irqs(struct irq_domain *domain, struct device *dev, else dev_dbg(dev, "irq [%d-%d] for MSI\n", virq, virq + desc->nvec_used - 1); + /* + * This flag is set by the PCI layer as we need to activate + * the MSI entries before the PCI layer enables MSI in the + * card. Otherwise the card latches a random msi message. + */ + if (info->flags & MSI_FLAG_ACTIVATE_EARLY) { + struct irq_data *irq_data; + + irq_data = irq_domain_get_irq_data(domain, desc->irq); + irq_domain_activate_irq(irq_data); + } } return 0; |