diff options
| author | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2016-09-11 12:58:59 -0300 |
|---|---|---|
| committer | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2016-09-11 12:58:59 -0300 |
| commit | 0520a938e11c34a5ffc422b9316b85e294b0fbb2 (patch) | |
| tree | 9e44592eccb90ed2d2b3a893fb602e4ca894f695 /kernel/irq/msi.c | |
| parent | 273d4428f8c4cc94c9598f8bcc006ec2e8c654ea (diff) | |
Linux-libre 4.7.3-gnupck-4.7.3-gnu
Diffstat (limited to 'kernel/irq/msi.c')
| -rw-r--r-- | kernel/irq/msi.c | 19 |
1 files changed, 13 insertions, 6 deletions
diff --git a/kernel/irq/msi.c b/kernel/irq/msi.c index 38e89ce7b..0afe671f1 100644 --- a/kernel/irq/msi.c +++ b/kernel/irq/msi.c @@ -324,7 +324,7 @@ int msi_domain_alloc_irqs(struct irq_domain *domain, struct device *dev, struct msi_domain_ops *ops = info->ops; msi_alloc_info_t arg; struct msi_desc *desc; - int i, ret, virq = -1; + int i, ret, virq; ret = msi_domain_prepare_irqs(domain, dev, nvec, &arg); if (ret) @@ -332,12 +332,8 @@ int msi_domain_alloc_irqs(struct irq_domain *domain, struct device *dev, for_each_msi_entry(desc, dev) { ops->set_desc(&arg, desc); - if (info->flags & MSI_FLAG_IDENTITY_MAP) - virq = (int)ops->get_hwirq(info, &arg); - else - virq = -1; - virq = __irq_domain_alloc_irqs(domain, virq, desc->nvec_used, + virq = __irq_domain_alloc_irqs(domain, -1, desc->nvec_used, dev_to_node(dev), &arg, false); if (virq < 0) { ret = -ENOSPC; @@ -361,6 +357,17 @@ 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; |