[PATCH v3 3/9] ata: libahci_platform: Do not try to get an IRQ when AHCI_HFLAG_MULTI_MSI is set

[sven.auhagen@voleatech.de]

From: Sven Auhagen <sven.auhagen@voleatech.de>

When the ahci-host AHCI_HFLAG_MULTI_MSI flag is set then the driver must
provide a get_irq_vector callback and take care of getting the IRQs itself.
So in this case ahci_platform_init_host() should not try to get an
IRQ itself.

Suggested-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Sven Auhagen <sven.auhagen@voleatech.de>
---
 drivers/ata/libahci_platform.c | 16 +++++++++-------
 1 file changed, 9 insertions(+), 7 deletions(-)

diff --git a/drivers/ata/libahci_platform.c b/drivers/ata/libahci_platform.c
index de638dafce21..f6f2a111d226 100644
--- a/drivers/ata/libahci_platform.c
+++ b/drivers/ata/libahci_platform.c
@@ -581,14 +581,16 @@ int ahci_platform_init_host(struct platform_device *pdev,
 	struct ata_host *host;
 	int i, irq, n_ports, rc;
 
-	irq = platform_get_irq(pdev, 0);
-	if (irq <= 0) {
-		if (irq != -EPROBE_DEFER)
-			dev_err(dev, "no irq\n");
-		return irq;
-	}
+	if (!(hpriv->flags & AHCI_HFLAG_MULTI_MSI)) {
+		irq = platform_get_irq(pdev, 0);
+		if (irq <= 0) {
+			if (irq != -EPROBE_DEFER)
+				dev_err(dev, "no irq\n");
+			return irq;
+		}
 
-	hpriv->irq = irq;
+		hpriv->irq = irq;
+	}
 
 	/* prepare host */
 	pi.private_data = (void *)(unsigned long)hpriv->flags;
-- 
2.20.1