pata_hpt37x: fold 'if' statement into 'switch'
Sergei Shtylyov [Mon, 10 Jan 2011 19:31:13 +0000 (22:31 +0300)]
hpt37x_init_one() has a large *if* statement which should really be folded into
the *switch* statement that currently constitutes its *else* branch, reducing
one level of indentation...

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>

drivers/ata/pata_hpt37x.c

index 6003a34..29d8adc 100644 (file)
@@ -24,7 +24,7 @@
 #include <linux/libata.h>
 
 #define DRV_NAME       "pata_hpt37x"
-#define DRV_VERSION    "0.6.20"
+#define DRV_VERSION    "0.6.21"
 
 struct hpt_clock {
        u8      xfer_speed;
@@ -838,7 +838,8 @@ static int hpt37x_init_one(struct pci_dev *dev, const struct pci_device_id *id)
        if (rc)
                return rc;
 
-       if (dev->device == PCI_DEVICE_ID_TTI_HPT366) {
+       switch (dev->device) {
+       case PCI_DEVICE_ID_TTI_HPT366:
                /* May be a later chip in disguise. Check */
                /* Older chips are in the HPT366 driver. Ignore them */
                if (rev < 3)
@@ -867,50 +868,46 @@ static int hpt37x_init_one(struct pci_dev *dev, const struct pci_device_id *id)
                               "please report (%d).\n", rev);
                        return -ENODEV;
                }
-       } else {
-               switch (dev->device) {
-               case PCI_DEVICE_ID_TTI_HPT372:
-                       /* 372N if rev >= 2 */
-                       if (rev >= 2)
-                               return -ENODEV;
-                       ppi[0] = &info_hpt372;
-                       chip_table = &hpt372a;
-                       break;
-               case PCI_DEVICE_ID_TTI_HPT302:
-                       /* 302N if rev > 1 */
-                       if (rev > 1)
-                               return -ENODEV;
-                       ppi[0] = &info_hpt302;
-                       /* Check this */
-                       chip_table = &hpt302;
-                       break;
-               case PCI_DEVICE_ID_TTI_HPT371:
-                       if (rev > 1)
-                               return -ENODEV;
-                       ppi[0] = &info_hpt302;
-                       chip_table = &hpt371;
-                       /*
-                        * Single channel device, master is not present
-                        * but the BIOS (or us for non x86) must mark it
-                        * absent
-                        */
-                       pci_read_config_byte(dev, 0x50, &mcr1);
-                       mcr1 &= ~0x04;
-                       pci_write_config_byte(dev, 0x50, mcr1);
-                       break;
-               case PCI_DEVICE_ID_TTI_HPT374:
-                       chip_table = &hpt374;
-                       if (!(PCI_FUNC(dev->devfn) & 1))
-                               *ppi = &info_hpt374_fn0;
-                       else
-                               *ppi = &info_hpt374_fn1;
-                       break;
-               default:
-                       pr_err(DRV_NAME
-                              ": PCI table is bogus, please report (%d).\n",
-                              dev->device);
-                               return -ENODEV;
-               }
+               break;
+       case PCI_DEVICE_ID_TTI_HPT372:
+               /* 372N if rev >= 2 */
+               if (rev >= 2)
+                       return -ENODEV;
+               ppi[0] = &info_hpt372;
+               chip_table = &hpt372a;
+               break;
+       case PCI_DEVICE_ID_TTI_HPT302:
+               /* 302N if rev > 1 */
+               if (rev > 1)
+                       return -ENODEV;
+               ppi[0] = &info_hpt302;
+               /* Check this */
+               chip_table = &hpt302;
+               break;
+       case PCI_DEVICE_ID_TTI_HPT371:
+               if (rev > 1)
+                       return -ENODEV;
+               ppi[0] = &info_hpt302;
+               chip_table = &hpt371;
+               /*
+                * Single channel device, master is not present but the BIOS
+                * (or us for non x86) must mark it absent
+                */
+               pci_read_config_byte(dev, 0x50, &mcr1);
+               mcr1 &= ~0x04;
+               pci_write_config_byte(dev, 0x50, mcr1);
+               break;
+       case PCI_DEVICE_ID_TTI_HPT374:
+               chip_table = &hpt374;
+               if (!(PCI_FUNC(dev->devfn) & 1))
+                       *ppi = &info_hpt374_fn0;
+               else
+                       *ppi = &info_hpt374_fn1;
+               break;
+       default:
+               pr_err(DRV_NAME ": PCI table is bogus, please report (%d).\n",
+                      dev->device);
+               return -ENODEV;
        }
        /* Ok so this is a chip we support */