1 files changed, 8 insertions, 1 deletions

diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c
index 5064f3ea20f1..db4380d70031 100644
--- a/drivers/ata/ahci.c
+++ b/drivers/ata/ahci.c
@@ -1146,11 +1146,18 @@ int ahci_host_activate(struct ata_host *host, int irq, unsigned int n_msis)
                 return rc;
 
         for (i = 0; i < host->n_ports; i++) {
+                const char* desc;
                 struct ahci_port_priv *pp = host->ports[i]->private_data;
 
+                /* pp is NULL for dummy ports */
+                if (pp)
+                        desc = pp->irq_desc;
+                else
+                        desc = dev_driver_string(host->dev);
+
                 rc = devm_request_threaded_irq(host->dev,
                         irq + i, ahci_hw_interrupt, ahci_thread_fn, IRQF_SHARED,
-                        pp->irq_desc, host->ports[i]);
+                        desc, host->ports[i]);
                 if (rc)
                         goto out_free_irqs;
         }