drm/i915: use drm_debug_enabled() to check for debug categories

Allow better abstraction of the drm_debug global variable in the
future. No functional changes.
Reviewed-by: Eric Engestrom <eric@engestrom.ch>
Acked-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Acked-by: Sean Paul <sean@poorly.run>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/e94fe4977c5b8cac68556318be81f8e422e973fd.1572258936.git.jani.nikula@intel.com

drivers/gpu/drm/i915/display/intel_display.c

@@ -12213,7 +12213,7 @@ static void
 intel_dump_infoframe(struct drm_i915_private *dev_priv,
 		     const union hdmi_infoframe *frame)
 {
-	if ((drm_debug & DRM_UT_KMS) == 0)
+	if (!drm_debug_enabled(DRM_UT_KMS))
 		return;
 
 	hdmi_infoframe_log(KERN_DEBUG, dev_priv->drm.dev, frame);
@@ -12745,7 +12745,7 @@ pipe_config_infoframe_mismatch(struct drm_i915_private *dev_priv,
 			       const union hdmi_infoframe *b)
 {
 	if (fastset) {
-		if ((drm_debug & DRM_UT_KMS) == 0)
+		if (!drm_debug_enabled(DRM_UT_KMS))
 			return;
 
 		DRM_DEBUG_KMS("fastset mismatch in %s infoframe\n", name);

drivers/gpu/drm/i915/display/intel_dp.c

@@ -1808,7 +1808,7 @@ static void intel_dp_print_rates(struct intel_dp *intel_dp)
 {
 	char str[128]; /* FIXME: too big for stack? */
 
-	if ((drm_debug & DRM_UT_KMS) == 0)
+	if (!drm_debug_enabled(DRM_UT_KMS))
 		return;
 
 	snprintf_int_array(str, sizeof(str),

drivers/gpu/drm/i915/i915_drv.c

@@ -1382,7 +1382,7 @@ static void i915_driver_unregister(struct drm_i915_private *dev_priv)
 
 static void i915_welcome_messages(struct drm_i915_private *dev_priv)
 {
-	if (drm_debug & DRM_UT_DRIVER) {
+	if (drm_debug_enabled(DRM_UT_DRIVER)) {
 		struct drm_printer p = drm_debug_printer("i915 device info:");
 
 		drm_printf(&p, "pciid=0x%04x rev=0x%02x platform=%s (subplatform=0x%x) gen=%i\n",

drivers/gpu/drm/i915/i915_gem.h

@@ -34,7 +34,7 @@ struct drm_i915_private;
 
 #ifdef CONFIG_DRM_I915_DEBUG_GEM
 
-#define GEM_SHOW_DEBUG() (drm_debug & DRM_UT_DRIVER)
+#define GEM_SHOW_DEBUG() drm_debug_enabled(DRM_UT_DRIVER)
 
 #define GEM_BUG_ON(condition) do { if (unlikely((condition))) {	\
 		GEM_TRACE_ERR("%s:%d GEM_BUG_ON(%s)\n", \

drivers/gpu/drm/i915/i915_utils.c

@@ -23,7 +23,7 @@ __i915_printk(struct drm_i915_private *dev_priv, const char *level,
 	struct va_format vaf;
 	va_list args;
 
-	if (is_debug && !(drm_debug & DRM_UT_DRIVER))
+	if (is_debug && !drm_debug_enabled(DRM_UT_DRIVER))
 		return;
 
 	va_start(args, fmt);

drivers/gpu/drm/i915/intel_pm.c

@@ -5307,7 +5307,7 @@ skl_print_wm_changes(struct intel_atomic_state *state)
 	struct intel_crtc *crtc;
 	int i;
 
-	if ((drm_debug & DRM_UT_KMS) == 0)
+	if (!drm_debug_enabled(DRM_UT_KMS))
 		return;
 
 	for_each_oldnew_intel_crtc_in_state(state, crtc, old_crtc_state,