drm/radeon: Avoid externs & do not initialize globals to 0 in radeon_drv.c

Fixes the following:

 - WARNING: externs should be avoided in .c files
 - ERROR: do not initialise globals to 0
 - WARNING: Missing a blank line after declarations

Cc: Christian König <christian.koenig@amd.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Srinivasan Shanmugam <srinivasan.shanmugam@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/radeon/radeon_drv.c

@@ -113,59 +113,32 @@
 #define KMS_DRIVER_MAJOR	2
 #define KMS_DRIVER_MINOR	50
 #define KMS_DRIVER_PATCHLEVEL	0
-int radeon_suspend_kms(struct drm_device *dev, bool suspend,
-		       bool fbcon, bool freeze);
-int radeon_resume_kms(struct drm_device *dev, bool resume, bool fbcon);
-extern int radeon_get_crtc_scanoutpos(struct drm_device *dev, unsigned int crtc,
-				      unsigned int flags, int *vpos, int *hpos,
-				      ktime_t *stime, ktime_t *etime,
-				      const struct drm_display_mode *mode);
-extern bool radeon_is_px(struct drm_device *dev);
-int radeon_mode_dumb_mmap(struct drm_file *filp,
-			  struct drm_device *dev,
-			  uint32_t handle, uint64_t *offset_p);
-int radeon_mode_dumb_create(struct drm_file *file_priv,
-			    struct drm_device *dev,
-			    struct drm_mode_create_dumb *args);
-
-/* atpx handler */
-#if defined(CONFIG_VGA_SWITCHEROO)
-void radeon_register_atpx_handler(void);
-void radeon_unregister_atpx_handler(void);
-bool radeon_has_atpx_dgpu_power_cntl(void);
-bool radeon_is_atpx_hybrid(void);
-#else
-static inline void radeon_register_atpx_handler(void) {}
-static inline void radeon_unregister_atpx_handler(void) {}
-static inline bool radeon_has_atpx_dgpu_power_cntl(void) { return false; }
-static inline bool radeon_is_atpx_hybrid(void) { return false; }
-#endif
 
 int radeon_no_wb;
 int radeon_modeset = -1;
 int radeon_dynclks = -1;
-int radeon_r4xx_atom = 0;
+int radeon_r4xx_atom;
 int radeon_agpmode = -1;
-int radeon_vram_limit = 0;
+int radeon_vram_limit;
 int radeon_gart_size = -1; /* auto */
-int radeon_benchmarking = 0;
-int radeon_testing = 0;
-int radeon_connector_table = 0;
+int radeon_benchmarking;
+int radeon_testing;
+int radeon_connector_table;
 int radeon_tv = 1;
 int radeon_audio = -1;
-int radeon_disp_priority = 0;
-int radeon_hw_i2c = 0;
+int radeon_disp_priority;
+int radeon_hw_i2c;
 int radeon_pcie_gen2 = -1;
 int radeon_msi = -1;
 int radeon_lockup_timeout = 10000;
-int radeon_fastfb = 0;
+int radeon_fastfb;
 int radeon_dpm = -1;
 int radeon_aspm = -1;
 int radeon_runtime_pm = -1;
-int radeon_hard_reset = 0;
+int radeon_hard_reset;
 int radeon_vm_size = 8;
 int radeon_vm_block_size = -1;
-int radeon_deep_color = 0;
+int radeon_deep_color;
 int radeon_use_pflipirq = 2;
 int radeon_bapm = -1;
 int radeon_backlight = -1;
@@ -384,6 +357,7 @@ radeon_pci_shutdown(struct pci_dev *pdev)
 static int radeon_pmops_suspend(struct device *dev)
 {
 	struct drm_device *drm_dev = dev_get_drvdata(dev);
+
 	return radeon_suspend_kms(drm_dev, true, true, false);
 }
 
@@ -404,12 +378,14 @@ static int radeon_pmops_resume(struct device *dev)
 static int radeon_pmops_freeze(struct device *dev)
 {
 	struct drm_device *drm_dev = dev_get_drvdata(dev);
+
 	return radeon_suspend_kms(drm_dev, false, true, true);
 }
 
 static int radeon_pmops_thaw(struct device *dev)
 {
 	struct drm_device *drm_dev = dev_get_drvdata(dev);
+
 	return radeon_resume_kms(drm_dev, false, true);
 }
 
@@ -494,6 +470,7 @@ long radeon_drm_ioctl(struct file *filp,
 	struct drm_file *file_priv = filp->private_data;
 	struct drm_device *dev;
 	long ret;
+
 	dev = file_priv->minor->dev;
 	ret = pm_runtime_get_sync(dev->dev);
 	if (ret < 0) {

drivers/gpu/drm/radeon/radeon_drv.h

@@ -124,4 +124,17 @@ int radeon_driver_open_kms(struct drm_device *dev, struct drm_file *file_priv);
 void radeon_driver_postclose_kms(struct drm_device *dev,
 				 struct drm_file *file_priv);
 
+/* atpx handler */
+#if defined(CONFIG_VGA_SWITCHEROO)
+void radeon_register_atpx_handler(void);
+void radeon_unregister_atpx_handler(void);
+bool radeon_has_atpx_dgpu_power_cntl(void);
+bool radeon_is_atpx_hybrid(void);
+#else
+static inline void radeon_register_atpx_handler(void) {}
+static inline void radeon_unregister_atpx_handler(void) {}
+static inline bool radeon_has_atpx_dgpu_power_cntl(void) { return false; }
+static inline bool radeon_is_atpx_hybrid(void) { return false; }
+#endif
+
 #endif				/* __RADEON_DRV_H__ */