[PATCH 4/5] drm: Improve on minor type helpers

[Thomas Hellstrom <thellstrom@vmware.com>]

Add a drm_is_legacy() helper, constify argument to drm_is_render_client(),
and use / change helpers where appropriate.

Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
---
 drivers/gpu/drm/drm_crtc.c |   10 +++++-----
 drivers/gpu/drm/drm_fops.c |    5 ++---
 include/drm/drmP.h         |    9 +++++++--
 3 files changed, 14 insertions(+), 10 deletions(-)

diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c
index c9d895a..4190c7e 100644
--- a/drivers/gpu/drm/drm_crtc.c
+++ b/drivers/gpu/drm/drm_crtc.c
@@ -1429,7 +1429,7 @@ int drm_mode_getresources(struct drm_device *dev, void *data,
 	mutex_unlock(&file_priv->fbs_lock);
 
 	drm_modeset_lock_all(dev);
-	if (file_priv->minor->type != DRM_MINOR_LEGACY) {
+	if (!drm_is_legacy(file_priv)) {
 
 		list_for_each(lh, &dev->mode_config.crtc_list)
 			crtc_count++;
@@ -1456,7 +1456,7 @@ int drm_mode_getresources(struct drm_device *dev, void *data,
 	if (card_res->count_crtcs >= crtc_count) {
 		copied = 0;
 		crtc_id = (uint32_t __user *)(unsigned long)card_res->crtc_id_ptr;
-		if (file_priv->minor->type != DRM_MINOR_LEGACY) {
+		if (!drm_is_legacy(file_priv)) {
 			list_for_each_entry(crtc, &dev->mode_config.crtc_list,
 					    head) {
 				DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
@@ -1483,7 +1483,7 @@ int drm_mode_getresources(struct drm_device *dev, void *data,
 	if (card_res->count_encoders >= encoder_count) {
 		copied = 0;
 		encoder_id = (uint32_t __user *)(unsigned long)card_res->encoder_id_ptr;
-		if (file_priv->minor->type != DRM_MINOR_LEGACY) {
+		if (!drm_is_legacy(file_priv)) {
 			list_for_each_entry(encoder,
 					    &dev->mode_config.encoder_list,
 					    head) {
@@ -1514,7 +1514,7 @@ int drm_mode_getresources(struct drm_device *dev, void *data,
 	if (card_res->count_connectors >= connector_count) {
 		copied = 0;
 		connector_id = (uint32_t __user *)(unsigned long)card_res->connector_id_ptr;
-		if (file_priv->minor->type != DRM_MINOR_LEGACY) {
+		if (!drm_is_legacy(file_priv)) {
 			list_for_each_entry(connector,
 					    &dev->mode_config.connector_list,
 					    head) {
@@ -2716,7 +2716,7 @@ int drm_mode_getfb(struct drm_device *dev,
 	r->pitch = fb->pitches[0];
 	if (fb->funcs->create_handle) {
 		if (file_priv->is_master || capable(CAP_SYS_ADMIN) ||
-		    file_priv->minor->type == DRM_MINOR_CONTROL) {
+		    drm_is_control(file_priv)) {
 			ret = fb->funcs->create_handle(fb, file_priv,
 						       &r->handle);
 		} else {
diff --git a/drivers/gpu/drm/drm_fops.c b/drivers/gpu/drm/drm_fops.c
index 08a3196..31a4655 100644
--- a/drivers/gpu/drm/drm_fops.c
+++ b/drivers/gpu/drm/drm_fops.c
@@ -259,8 +259,7 @@ static int drm_open_helper(struct inode *inode, struct file *filp,
 	/* if there is no current master make this fd it, but do not create
 	 * any master object for render clients */
 	mutex_lock(&dev->struct_mutex);
-	if (!priv->minor->master && !drm_is_render_client(priv) &&
-	    !drm_is_control(priv)) {
+	if (drm_is_legacy(priv) && !priv->minor->master) {
 		/* create a new master */
 		priv->minor->master = drm_master_create(priv->minor);
 		if (!priv->minor->master) {
@@ -298,7 +297,7 @@ static int drm_open_helper(struct inode *inode, struct file *filp,
 				goto out_close;
 			}
 		}
-	} else if (!drm_is_render_client(priv) && !drm_is_control(priv)) {
+	} else if (drm_is_legacy(priv)) {
 		/* get a reference to the master */
 		priv->master = drm_master_get(priv->minor->master);
 	}
diff --git a/include/drm/drmP.h b/include/drm/drmP.h
index ff68e26..5db7f86 100644
--- a/include/drm/drmP.h
+++ b/include/drm/drmP.h
@@ -1241,16 +1241,21 @@ static inline bool drm_modeset_is_locked(struct drm_device *dev)
 	return mutex_is_locked(&dev->mode_config.mutex);
 }
 
-static inline bool drm_is_render_client(struct drm_file *file_priv)
+static inline bool drm_is_render_client(const struct drm_file *file_priv)
 {
 	return file_priv->minor->type == DRM_MINOR_RENDER;
 }
 
-static inline bool drm_is_control(struct drm_file *file_priv)
+static inline bool drm_is_control(const struct drm_file *file_priv)
 {
 	return file_priv->minor->type == DRM_MINOR_CONTROL;
 }
 
+static inline bool drm_is_legacy(const struct drm_file *file_priv)
+{
+	return file_priv->minor->type == DRM_MINOR_LEGACY;
+}
+
 /******************************************************************/
 /** \name Internal function definitions */
 /*@{*/
-- 
1.7.10.4