V4L/DVB: media/video/tlg2300: fix build when CONFIG_PM=n

When CONFIG_PM is not enabled, tlg2300 has build errors,
so handle that case, mostly via stubs.

drivers/media/video/tlg2300/pd-alsa.c:237: error: 'struct poseidon' has no member named 'msg'
drivers/media/video/tlg2300/pd-main.c:412: error: implicit declaration of function 'find_old_poseidon'
drivers/media/video/tlg2300/pd-main.c:418: error: implicit declaration of function 'set_map_flags'
drivers/media/video/tlg2300/pd-main.c:462: error: implicit declaration of function 'get_pd'

Cc: linux-next@vger.kernel.org, LKML <linux-kernel@vger.kernel.org>, 	linux-media@vger.kernel.org
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Cc: Huang Shijie <shijie8@gmail.com>
Cc: Kang Yong <kangyong@telegent.com>
Cc: Zhang Xiaobing <xbzhang@telegent.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/video/tlg2300/pd-common.h

@@ -254,7 +254,11 @@ void destroy_video_device(struct video_device **v_dev);
 extern int debug_mode;
 void set_debug_mode(struct video_device *vfd, int debug_mode);
 
+#ifdef CONFIG_PM
 #define in_hibernation(pd) (pd->msg.event == PM_EVENT_FREEZE)
+#else
+#define in_hibernation(pd) (0)
+#endif
 #define get_pm_count(p) (atomic_read(&(p)->interface->pm_usage_cnt))
 
 #define log(a, ...) printk(KERN_DEBUG "\t[ %s : %.3d ] "a"\n", \

drivers/media/video/tlg2300/pd-main.c

@@ -255,6 +255,11 @@ static int firmware_download(struct usb_device *udev)
 	return ret;
 }
 
+static inline struct poseidon *get_pd(struct usb_interface *intf)
+{
+	return usb_get_intfdata(intf);
+}
+
 #ifdef CONFIG_PM
 /* one-to-one map : poseidon{} <----> usb_device{}'s port */
 static inline void set_map_flags(struct poseidon *pd, struct usb_device *udev)
@@ -303,11 +308,6 @@ static inline int is_working(struct poseidon *pd)
 	return get_pm_count(pd) > 0;
 }
 
-static inline struct poseidon *get_pd(struct usb_interface *intf)
-{
-	return usb_get_intfdata(intf);
-}
-
 static int poseidon_suspend(struct usb_interface *intf, pm_message_t msg)
 {
 	struct poseidon *pd = get_pd(intf);
@@ -366,6 +366,15 @@ static void hibernation_resume(struct work_struct *w)
 	if (pd->pm_resume)
 		pd->pm_resume(pd);
 }
+#else /* CONFIG_PM is not enabled: */
+static inline struct poseidon *find_old_poseidon(struct usb_device *udev)
+{
+	return NULL;
+}
+
+static inline void set_map_flags(struct poseidon *pd, struct usb_device *udev)
+{
+}
 #endif
 
 static bool check_firmware(struct usb_device *udev, int *down_firmware)