drm: remove drm_debug_printer in favor of drm_dbg_printer

Convert the remaining drm_debug_printer users over to drm_dbg_printer,
as it can handle the cases without struct drm_device pointer, and also
provides drm debug category and prefix support. Remove drm_debug_printer
altogether.
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Luca Coelho <luciano.coelho@intel.com>
Acked-by: Maxime Ripard <mripard@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/18b5b91e62d071675a651f6f91c58f05ad74134a.1705410327.git.jani.nikula@intel.com

drivers/gpu/drm/drm_modeset_lock.c

@@ -91,7 +91,7 @@ static noinline depot_stack_handle_t __drm_stack_depot_save(void)
 
 static void __drm_stack_depot_print(depot_stack_handle_t stack_depot)
 {
-	struct drm_printer p = drm_debug_printer("drm_modeset_lock");
+	struct drm_printer p = drm_dbg_printer(NULL, DRM_UT_KMS, "drm_modeset_lock");
 	unsigned long *entries;
 	unsigned int nr_entries;
 	char *buf;

drivers/gpu/drm/drm_print.c

@@ -182,13 +182,6 @@ void __drm_printfn_info(struct drm_printer *p, struct va_format *vaf)
 }
 EXPORT_SYMBOL(__drm_printfn_info);
 
-void __drm_printfn_debug(struct drm_printer *p, struct va_format *vaf)
-{
-	/* pr_debug callsite decorations are unhelpful here */
-	printk(KERN_DEBUG "%s %pV", p->prefix, vaf);
-}
-EXPORT_SYMBOL(__drm_printfn_debug);
-
 void __drm_printfn_dbg(struct drm_printer *p, struct va_format *vaf)
 {
 	const struct drm_device *drm = p->arg;

drivers/gpu/drm/ttm/ttm_bo.c

@@ -49,7 +49,7 @@
 static void ttm_bo_mem_space_debug(struct ttm_buffer_object *bo,
 					struct ttm_placement *placement)
 {
-	struct drm_printer p = drm_debug_printer(TTM_PFX);
+	struct drm_printer p = drm_dbg_printer(NULL, DRM_UT_CORE, TTM_PFX);
 	struct ttm_resource_manager *man;
 	int i, mem_type;
 

include/drm/drm_print.h

@@ -184,7 +184,6 @@ void __drm_puts_coredump(struct drm_printer *p, const char *str);
 void __drm_printfn_seq_file(struct drm_printer *p, struct va_format *vaf);
 void __drm_puts_seq_file(struct drm_printer *p, const char *str);
 void __drm_printfn_info(struct drm_printer *p, struct va_format *vaf);
-void __drm_printfn_debug(struct drm_printer *p, struct va_format *vaf);
 void __drm_printfn_dbg(struct drm_printer *p, struct va_format *vaf);
 void __drm_printfn_err(struct drm_printer *p, struct va_format *vaf);
 
@@ -317,22 +316,6 @@ static inline struct drm_printer drm_info_printer(struct device *dev)
 	return p;
 }
 
-/**
- * drm_debug_printer - construct a &drm_printer that outputs to pr_debug()
- * @prefix: debug output prefix
- *
- * RETURNS:
- * The &drm_printer object
- */
-static inline struct drm_printer drm_debug_printer(const char *prefix)
-{
-	struct drm_printer p = {
-		.printfn = __drm_printfn_debug,
-		.prefix = prefix
-	};
-	return p;
-}
-
 /**
  * drm_dbg_printer - construct a &drm_printer for drm device specific output
  * @drm: the &struct drm_device pointer, or NULL