staging: unisys: visorchipset_init(): Simplify initial checks

Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: Benjamin Romer <benjamin.romer@unisys.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/unisys/visorbus/visorchipset.c b/drivers/staging/unisys/visorbus/visorchipset.c
index d88f11f..88a2b5e 100644 (file)
--- a/drivers/staging/unisys/visorbus/visorchipset.c
+++ b/drivers/staging/unisys/visorbus/visorchipset.c
@@ -1474,15 +1474,14 @@ initialize_controlvm_payload(void)
 /*  Send ACTION=online for DEVPATH=/sys/devices/platform/visorchipset.
  *  Returns CONTROLVM_RESP_xxx code.
  */
-int
+static int
 visorchipset_chipset_ready(void)
 {
        kobject_uevent(&visorchipset_platform_device.dev.kobj, KOBJ_ONLINE);
        return CONTROLVM_RESP_SUCCESS;
 }
-EXPORT_SYMBOL_GPL(visorchipset_chipset_ready);
 
-int
+static int
 visorchipset_chipset_selftest(void)
 {
        char env_selftest[20];
@@ -1493,18 +1492,16 @@ visorchipset_chipset_selftest(void)
                           envp);
        return CONTROLVM_RESP_SUCCESS;
 }
-EXPORT_SYMBOL_GPL(visorchipset_chipset_selftest);
 
 /*  Send ACTION=offline for DEVPATH=/sys/devices/platform/visorchipset.
  *  Returns CONTROLVM_RESP_xxx code.
  */
-int
+static int
 visorchipset_chipset_notready(void)
 {
        kobject_uevent(&visorchipset_platform_device.dev.kobj, KOBJ_OFFLINE);
        return CONTROLVM_RESP_SUCCESS;
 }
-EXPORT_SYMBOL_GPL(visorchipset_chipset_notready);
 
 static void
 chipset_ready(struct controlvm_message_header *msg_hdr)
@@ -2099,14 +2096,13 @@ device_destroy_response(u32 bus_no, u32 dev_no, int response)
        device_responder(CONTROLVM_DEVICE_DESTROY, bus_no, dev_no, response);
 }
 
-void
+static void
 visorchipset_device_pause_response(u32 bus_no, u32 dev_no, int response)
 {
        device_changestate_responder(CONTROLVM_DEVICE_CHANGESTATE,
                                     bus_no, dev_no, response,
                                     segment_state_standby);
 }
-EXPORT_SYMBOL_GPL(visorchipset_device_pause_response);
 
 static void
 device_resume_response(u32 bus_no, u32 dev_no, int response)
@@ -2327,28 +2323,26 @@ visorchipset_init(struct acpi_device *acpi_device)
 {
        int rc = 0;
        u64 addr;
+       int tmp_sz = sizeof(struct spar_controlvm_channel_protocol);
+       uuid_le uuid = SPAR_CONTROLVM_CHANNEL_PROTOCOL_UUID;
+
+       addr = controlvm_get_channel_address();
+       if (!addr)
+               return -ENODEV;
 
        memset(&busdev_notifiers, 0, sizeof(busdev_notifiers));
        memset(&controlvm_payload_info, 0, sizeof(controlvm_payload_info));
        memset(&livedump_info, 0, sizeof(livedump_info));
        atomic_set(&livedump_info.buffers_in_use, 0);
 
-       addr = controlvm_get_channel_address();
-       if (addr) {
-               int tmp_sz = sizeof(struct spar_controlvm_channel_protocol);
-               uuid_le uuid = SPAR_CONTROLVM_CHANNEL_PROTOCOL_UUID;
-               controlvm_channel =
-                       visorchannel_create_with_lock(addr, tmp_sz,
-                                                     GFP_KERNEL, uuid);
-               if (SPAR_CONTROLVM_CHANNEL_OK_CLIENT(
-                               visorchannel_get_header(controlvm_channel))) {
-                       initialize_controlvm_payload();
-               } else {
-                       visorchannel_destroy(controlvm_channel);
-                       controlvm_channel = NULL;
-                       return -ENODEV;
-               }
+       controlvm_channel = visorchannel_create_with_lock(addr, tmp_sz,
+                                                         GFP_KERNEL, uuid);
+       if (SPAR_CONTROLVM_CHANNEL_OK_CLIENT(
+                   visorchannel_get_header(controlvm_channel))) {
+               initialize_controlvm_payload();
        } else {
+               visorchannel_destroy(controlvm_channel);
+               controlvm_channel = NULL;
                return -ENODEV;
        }