drm/print: move drm_debug variable to drm_print.[ch]

Move drm_debug variable declaration and definition to where they are
relevant and needed. No functional changes.
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Eric Engestrom <eric@engestrom.ch>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/71a566c68883b6e6c61414cd9f7c36c84015edb1.1569329774.git.jani.nikula@intel.com

drivers/gpu/drm/drm_drv.c

@@ -46,26 +46,9 @@
 #include "drm_internal.h"
 #include "drm_legacy.h"
 
-/*
- * drm_debug: Enable debug output.
- * Bitmask of DRM_UT_x. See include/drm/drm_print.h for details.
- */
-unsigned int drm_debug = 0;
-EXPORT_SYMBOL(drm_debug);
-
 MODULE_AUTHOR("Gareth Hughes, Leif Delgass, José Fonseca, Jon Smirl");
 MODULE_DESCRIPTION("DRM shared core routines");
 MODULE_LICENSE("GPL and additional rights");
-MODULE_PARM_DESC(debug, "Enable debug output, where each bit enables a debug category.\n"
-"\t\tBit 0 (0x01)  will enable CORE messages (drm core code)\n"
-"\t\tBit 1 (0x02)  will enable DRIVER messages (drm controller code)\n"
-"\t\tBit 2 (0x04)  will enable KMS messages (modesetting code)\n"
-"\t\tBit 3 (0x08)  will enable PRIME messages (prime code)\n"
-"\t\tBit 4 (0x10)  will enable ATOMIC messages (atomic code)\n"
-"\t\tBit 5 (0x20)  will enable VBL messages (vblank code)\n"
-"\t\tBit 7 (0x80)  will enable LEASE messages (leasing code)\n"
-"\t\tBit 8 (0x100) will enable DP messages (displayport code)");
-module_param_named(debug, drm_debug, int, 0600);
 
 static DEFINE_SPINLOCK(drm_minor_lock);
 static struct idr drm_minors_idr;

drivers/gpu/drm/drm_print.c

@@ -28,6 +28,7 @@
 #include <stdarg.h>
 
 #include <linux/io.h>
+#include <linux/moduleparam.h>
 #include <linux/seq_file.h>
 #include <linux/slab.h>
 
@@ -35,6 +36,24 @@
 #include <drm/drm_drv.h>
 #include <drm/drm_print.h>
 
+/*
+ * drm_debug: Enable debug output.
+ * Bitmask of DRM_UT_x. See include/drm/drm_print.h for details.
+ */
+unsigned int drm_debug;
+EXPORT_SYMBOL(drm_debug);
+
+MODULE_PARM_DESC(debug, "Enable debug output, where each bit enables a debug category.\n"
+"\t\tBit 0 (0x01)  will enable CORE messages (drm core code)\n"
+"\t\tBit 1 (0x02)  will enable DRIVER messages (drm controller code)\n"
+"\t\tBit 2 (0x04)  will enable KMS messages (modesetting code)\n"
+"\t\tBit 3 (0x08)  will enable PRIME messages (prime code)\n"
+"\t\tBit 4 (0x10)  will enable ATOMIC messages (atomic code)\n"
+"\t\tBit 5 (0x20)  will enable VBL messages (vblank code)\n"
+"\t\tBit 7 (0x80)  will enable LEASE messages (leasing code)\n"
+"\t\tBit 8 (0x100) will enable DP messages (displayport code)");
+module_param_named(debug, drm_debug, int, 0600);
+
 void __drm_puts_coredump(struct drm_printer *p, const char *str)
 {
 	struct drm_print_iterator *iterator = p->arg;

include/drm/drm_drv.h

@@ -778,8 +778,6 @@ struct drm_driver {
 	int dev_priv_size;
 };
 
-extern unsigned int drm_debug;
-
 int drm_dev_init(struct drm_device *dev,
 		 struct drm_driver *driver,
 		 struct device *parent);

include/drm/drm_print.h

@@ -34,6 +34,8 @@
 
 #include <drm/drm.h>
 
+extern unsigned int drm_debug;
+
 /**
  * DOC: print
  *