drm: remove unused code

remove declared but unused functions from drmP.h, fix the comments
where necessary. Also, remove drm_mem_info which is unused.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Dave Airlie <airlied@redhat.com>

drivers/gpu/drm/drm_irq.c

@@ -305,7 +305,7 @@ static void drm_irq_vgaarb_nokms(void *cookie, bool state)
  * \param dev DRM device.
  *
  * Initializes the IRQ related data. Installs the handler, calling the driver
- * \c drm_driver_irq_preinstall() and \c drm_driver_irq_postinstall() functions
+ * \c irq_preinstall() and \c irq_postinstall() functions
  * before and after the installation.
  */
 int drm_irq_install(struct drm_device *dev)
@@ -385,7 +385,7 @@ EXPORT_SYMBOL(drm_irq_install);
  *
  * \param dev DRM device.
  *
- * Calls the driver's \c drm_driver_irq_uninstall() function, and stops the irq.
+ * Calls the driver's \c irq_uninstall() function, and stops the irq.
  */
 int drm_irq_uninstall(struct drm_device *dev)
 {

drivers/gpu/drm/drm_memory.c

@@ -37,25 +37,6 @@
 #include <linux/export.h>
 #include "drmP.h"
 
-/**
- * Called when "/proc/dri/%dev%/mem" is read.
- *
- * \param buf output buffer.
- * \param start start of output data.
- * \param offset requested start offset.
- * \param len requested number of bytes.
- * \param eof whether there is no more data to return.
- * \param data private data.
- * \return number of written bytes.
- *
- * No-op.
- */
-int drm_mem_info(char *buf, char **start, off_t offset,
-		 int len, int *eof, void *data)
-{
-	return 0;
-}
-
 #if __OS_HAS_AGP
 static void *agp_remap(unsigned long offset, unsigned long size,
 		       struct drm_device * dev)

include/drm/drmP.h

@@ -1264,11 +1264,6 @@ extern unsigned int drm_poll(struct file *filp, struct poll_table_struct *wait);
 
 				/* Memory management support (drm_memory.h) */
 #include "drm_memory.h"
-extern void drm_mem_init(void);
-extern int drm_mem_info(char *buf, char **start, off_t offset,
-			int request, int *eof, void *data);
-extern void *drm_realloc(void *oldpt, size_t oldsize, size_t size, int area);
-
 extern void drm_free_agp(DRM_AGP_MEM * handle, int pages);
 extern int drm_bind_agp(DRM_AGP_MEM * handle, unsigned int start);
 extern DRM_AGP_MEM *drm_agp_bind_pages(struct drm_device *dev,
@@ -1383,12 +1378,8 @@ extern void drm_core_reclaim_buffers(struct drm_device *dev,
 				/* IRQ support (drm_irq.h) */
 extern int drm_control(struct drm_device *dev, void *data,
 		       struct drm_file *file_priv);
-extern irqreturn_t drm_irq_handler(DRM_IRQ_ARGS);
 extern int drm_irq_install(struct drm_device *dev);
 extern int drm_irq_uninstall(struct drm_device *dev);
-extern void drm_driver_irq_preinstall(struct drm_device *dev);
-extern void drm_driver_irq_postinstall(struct drm_device *dev);
-extern void drm_driver_irq_uninstall(struct drm_device *dev);
 
 extern int drm_vblank_init(struct drm_device *dev, int num_crtcs);
 extern int drm_wait_vblank(struct drm_device *dev, void *data,