[libata] ahci: Factor out SATA port init into a separate function

Signed-off-by: Jeff Garzik <jeff@garzik.org>

diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c
index f55c9e746b7384b47096eedafbea48cd604a57e1..4f2c05ef1f09ecb7e9d4f369d6872ff7d4df57d8 100644 (file)
--- a/drivers/ata/ahci.c
+++ b/drivers/ata/ahci.c
@@ -814,39 +814,49 @@ static int ahci_reset_controller(struct ata_host *host)
        return 0;
 }
 
+static void ahci_port_init(struct pci_dev *pdev, struct ata_port *ap,
+                          int port_no, void __iomem *mmio,
+                          void __iomem *port_mmio)
+{
+       const char *emsg = NULL;
+       int rc;
+       u32 tmp;
+
+       /* make sure port is not active */
+       rc = ahci_deinit_port(ap, &emsg);
+       if (rc)
+               dev_printk(KERN_WARNING, &pdev->dev,
+                          "%s (%d)\n", emsg, rc);
+
+       /* clear SError */
+       tmp = readl(port_mmio + PORT_SCR_ERR);
+       VPRINTK("PORT_SCR_ERR 0x%x\n", tmp);
+       writel(tmp, port_mmio + PORT_SCR_ERR);
+
+       /* clear port IRQ */
+       tmp = readl(port_mmio + PORT_IRQ_STAT);
+       VPRINTK("PORT_IRQ_STAT 0x%x\n", tmp);
+       if (tmp)
+               writel(tmp, port_mmio + PORT_IRQ_STAT);
+
+       writel(1 << port_no, mmio + HOST_IRQ_STAT);
+}
+
 static void ahci_init_controller(struct ata_host *host)
 {
        struct pci_dev *pdev = to_pci_dev(host->dev);
        void __iomem *mmio = host->iomap[AHCI_PCI_BAR];
-       int i, rc;
+       int i;
        u32 tmp;
 
        for (i = 0; i < host->n_ports; i++) {
                struct ata_port *ap = host->ports[i];
                void __iomem *port_mmio = ahci_port_base(ap);
-               const char *emsg = NULL;
 
                if (ata_port_is_dummy(ap))
                        continue;
 
-               /* make sure port is not active */
-               rc = ahci_deinit_port(ap, &emsg);
-               if (rc)
-                       dev_printk(KERN_WARNING, &pdev->dev,
-                                  "%s (%d)\n", emsg, rc);
-
-               /* clear SError */
-               tmp = readl(port_mmio + PORT_SCR_ERR);
-               VPRINTK("PORT_SCR_ERR 0x%x\n", tmp);
-               writel(tmp, port_mmio + PORT_SCR_ERR);
-
-               /* clear port IRQ */
-               tmp = readl(port_mmio + PORT_IRQ_STAT);
-               VPRINTK("PORT_IRQ_STAT 0x%x\n", tmp);
-               if (tmp)
-                       writel(tmp, port_mmio + PORT_IRQ_STAT);
-
-               writel(1 << i, mmio + HOST_IRQ_STAT);
+               ahci_port_init(pdev, ap, i, mmio, port_mmio);
        }
 
        tmp = readl(mmio + HOST_CTL);