linux-kernel - [PATCH v3 1/2] drm: Add DRM_GEM

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Date:   Thu,  9 Jun 2022 10:42:11 -0700
From:   Rob Clark <robdclark@...il.com>
To:     dri-devel@...ts.freedesktop.org
Cc:     freedreno@...ts.freedesktop.org, linux-arm-msm@...r.kernel.org,
        Tvrtko Ursulin <tvrtko.ursulin@...ux.intel.com>,
        Thomas Zimmermann <tzimmermann@...e.de>,
        Chris Healy <cphealy@...il.com>,
        Rob Clark <robdclark@...omium.org>,
        Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
        Maxime Ripard <mripard@...nel.org>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        linux-kernel@...r.kernel.org (open list)
Subject: [PATCH v3 1/2] drm: Add DRM_GEM_FOPS

From: Rob Clark <robdclark@...omium.org>

The DEFINE_DRM_GEM_FOPS() helper is a bit limiting if a driver wants to
provide additional file ops, like show_fdinfo().

v2: Split out DRM_GEM_FOPS instead of making DEFINE_DRM_GEM_FOPS
    varardic
v3: nits

Signed-off-by: Rob Clark <robdclark@...omium.org>
Acked-by: Thomas Zimmermann <tzimmermann@...e.de>
---
 include/drm/drm_gem.h | 26 ++++++++++++++++++--------
 1 file changed, 18 insertions(+), 8 deletions(-)

diff --git a/include/drm/drm_gem.h b/include/drm/drm_gem.h
index 9d7c61a122dc..87cffc9efa85 100644
--- a/include/drm/drm_gem.h
+++ b/include/drm/drm_gem.h
@@ -314,6 +314,23 @@ struct drm_gem_object {
 	const struct drm_gem_object_funcs *funcs;
 };
 
+/**
+ * DRM_GEM_FOPS - Default drm GEM file operations
+ *
+ * This macro provides a shorthand for setting the GEM file ops in the
+ * &file_operations structure.  If all you need are the default ops, use
+ * DEFINE_DRM_GEM_FOPS instead.
+ */
+#define DRM_GEM_FOPS \
+	.open		= drm_open,\
+	.release	= drm_release,\
+	.unlocked_ioctl	= drm_ioctl,\
+	.compat_ioctl	= drm_compat_ioctl,\
+	.poll		= drm_poll,\
+	.read		= drm_read,\
+	.llseek		= noop_llseek,\
+	.mmap		= drm_gem_mmap
+
 /**
  * DEFINE_DRM_GEM_FOPS() - macro to generate file operations for GEM drivers
  * @name: name for the generated structure
@@ -330,14 +347,7 @@ struct drm_gem_object {
 #define DEFINE_DRM_GEM_FOPS(name) \
 	static const struct file_operations name = {\
 		.owner		= THIS_MODULE,\
-		.open		= drm_open,\
-		.release	= drm_release,\
-		.unlocked_ioctl	= drm_ioctl,\
-		.compat_ioctl	= drm_compat_ioctl,\
-		.poll		= drm_poll,\
-		.read		= drm_read,\
-		.llseek		= noop_llseek,\
-		.mmap		= drm_gem_mmap,\
+		DRM_GEM_FOPS,\
 	}
 
 void drm_gem_object_release(struct drm_gem_object *obj);
-- 
2.36.1