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;