ahci: jmb361 has only one port

JMB361 has only one port but reports it has two causing longish probe
failure on the second one.  Quirk it.

Reported by Gajo Petrovic in bz 10911.

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Gajo Petrovic <gajo01@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>

diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c
index 966ab401e5234d6c0adc8c86a90250b586e8f2fb..29f34d03bd75bd207c169d58e6d846954f3b7947 100644 (file)
--- a/drivers/ata/ahci.c
+++ b/drivers/ata/ahci.c
@@ -653,6 +653,14 @@ static void ahci_save_initial_config(struct pci_dev *pdev,
                cap &= ~HOST_CAP_PMP;
        }
 
+       if (pdev->vendor == PCI_VENDOR_ID_JMICRON && pdev->device == 0x2361 &&
+           port_map != 1) {
+               dev_printk(KERN_INFO, &pdev->dev,
+                          "JMB361 has only one port, port_map 0x%x -> 0x%x\n",
+                          port_map, 1);
+               port_map = 1;
+       }
+
        /*
         * Temporary Marvell 6145 hack: PATA port presence
         * is asserted through the standard AHCI port