pci syscall.c: Switch to refcounting API

Signed-off-by: NAlan Cox <alan@redhat.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

drivers/pci/syscall.c

@@ -23,14 +23,14 @@ sys_pciconfig_read(unsigned long bus, unsigned long dfn,
 	u8 byte;
 	u16 word;
 	u32 dword;
-	long err, cfg_ret;
+	long err;
+	long cfg_ret;
 
-	err = -EPERM;
 	if (!capable(CAP_SYS_ADMIN))
-		goto error;
+		return -EPERM;
 
 	err = -ENODEV;
-	dev = pci_find_slot(bus, dfn);
+	dev = pci_get_bus_and_slot(bus, dfn);
 	if (!dev)
 		goto error;
 
@@ -66,7 +66,8 @@ sys_pciconfig_read(unsigned long bus, unsigned long dfn,
 	case 4:
 		err = put_user(dword, (unsigned int __user *)buf);
 		break;
-	};
+	}
+	pci_dev_put(dev);
 	return err;
 
 error:
@@ -83,7 +84,8 @@ sys_pciconfig_read(unsigned long bus, unsigned long dfn,
 	case 4:
 		put_user(-1, (unsigned int __user *)buf);
 		break;
-	};
+	}
+	pci_dev_put(dev);
 	return err;
 }
 
@@ -101,7 +103,7 @@ sys_pciconfig_write(unsigned long bus, unsigned long dfn,
 	if (!capable(CAP_SYS_ADMIN))
 		return -EPERM;
 
-	dev = pci_find_slot(bus, dfn);
+	dev = pci_get_bus_and_slot(bus, dfn);
 	if (!dev)
 		return -ENODEV;
 
@@ -137,8 +139,8 @@ sys_pciconfig_write(unsigned long bus, unsigned long dfn,
 	default:
 		err = -EINVAL;
 		break;
-	};
+	}
 	unlock_kernel();
-
+	pci_dev_put(dev);
 	return err;
 }