drm: Trivial comment grammar cleanups

Most of these are just cases where code comments used contractions
(it's, who's) where they actually mean to use a possessive pronoun (its,
whose) or vice-versa.

Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20190202012326.20096-1-matthew.d.roper@intel.com

drivers/gpu/drm/drm_agpsupport.c

@@ -348,7 +348,7 @@ int drm_agp_bind_ioctl(struct drm_device *dev, void *data,
  * \return zero on success or a negative number on failure.
  *
  * Verifies the AGP device is present and has been acquired and looks up the
- * AGP memory entry. If the memory it's currently bound, unbind it via
+ * AGP memory entry. If the memory is currently bound, unbind it via
  * unbind_agp(). Frees it via free_agp() as well as the entry itself
  * and unlinks from the doubly linked list it's inserted in.
  */

drivers/gpu/drm/drm_atomic_helper.c

@@ -330,7 +330,7 @@ update_connector_routing(struct drm_atomic_state *state,
 	 * Since the connector can be unregistered at any point during an
 	 * atomic check or commit, this is racy. But that's OK: all we care
 	 * about is ensuring that userspace can't do anything but shut off the
-	 * display on a connector that was destroyed after its been notified,
+	 * display on a connector that was destroyed after it's been notified,
 	 * not before.
 	 */
 	if (drm_connector_is_unregistered(connector) && crtc_state->active) {
@@ -685,7 +685,7 @@ drm_atomic_helper_check_modeset(struct drm_device *dev,
 
 	/*
 	 * After all the routing has been prepared we need to add in any
-	 * connector which is itself unchanged, but who's crtc changes it's
+	 * connector which is itself unchanged, but whose crtc changes its
 	 * configuration. This must be done before calling mode_fixup in case a
 	 * crtc only changed its mode but has the same set of connectors.
 	 */
@@ -1670,7 +1670,7 @@ EXPORT_SYMBOL(drm_atomic_helper_async_commit);
  * drm_atomic_helper_setup_commit() and related functions.
  *
  * Committing the actual hardware state is done through the
- * &drm_mode_config_helper_funcs.atomic_commit_tail callback, or it's default
+ * &drm_mode_config_helper_funcs.atomic_commit_tail callback, or its default
  * implementation drm_atomic_helper_commit_tail().
  *
  * RETURNS:
@@ -1893,7 +1893,7 @@ crtc_or_fake_commit(struct drm_atomic_state *state, struct drm_crtc *crtc)
  * functions. drm_atomic_helper_wait_for_dependencies() must be called before
  * actually committing the hardware state, and for nonblocking commits this call
  * must be placed in the async worker. See also drm_atomic_helper_swap_state()
- * and it's stall parameter, for when a driver's commit hooks look at the
+ * and its stall parameter, for when a driver's commit hooks look at the
  * &drm_crtc.state, &drm_plane.state or &drm_connector.state pointer directly.
  *
  * Completion of the hardware commit step must be signalled using

drivers/gpu/drm/drm_atomic_uapi.c

@@ -44,8 +44,8 @@
  * DOC: overview
  *
  * This file contains the marshalling and demarshalling glue for the atomic UAPI
- * in all it's form: The monster ATOMIC IOCTL itself, code for GET_PROPERTY and
- * SET_PROPERTY IOCTls. Plus interface functions for compatibility helpers and
+ * in all its forms: The monster ATOMIC IOCTL itself, code for GET_PROPERTY and
+ * SET_PROPERTY IOCTLs. Plus interface functions for compatibility helpers and
  * drivers which have special needs to construct their own atomic updates, e.g.
  * for load detect or similiar.
  */

drivers/gpu/drm/drm_bufs.c

@@ -494,7 +494,7 @@ int drm_legacy_getmap_ioctl(struct drm_device *dev, void *data,
  * isn't in use.
  *
  * Searches the map on drm_device::maplist, removes it from the list, see if
- * its being used, and free any associate resource (such as MTRR's) if it's not
+ * it's being used, and free any associated resource (such as MTRR's) if it's not
  * being on use.
  *
  * \sa drm_legacy_addmap
@@ -621,7 +621,7 @@ int drm_legacy_rmmap_ioctl(struct drm_device *dev, void *data,
 		}
 	}
 
-	/* List has wrapped around to the head pointer, or its empty we didn't
+	/* List has wrapped around to the head pointer, or it's empty we didn't
 	 * find anything.
 	 */
 	if (list_empty(&dev->maplist) || !map) {

drivers/gpu/drm/drm_connector.c

@@ -1066,7 +1066,7 @@ EXPORT_SYMBOL(drm_mode_create_dvi_i_properties);
  *
  * content type (HDMI specific):
  *	Indicates content type setting to be used in HDMI infoframes to indicate
- *	content type for the external device, so that it adjusts it's display
+ *	content type for the external device, so that it adjusts its display
  *	settings accordingly.
  *
  *	The value of this property can be one of the following:

drivers/gpu/drm/drm_dp_mst_topology.c

@@ -941,7 +941,7 @@ static void drm_dp_free_mst_branch_device(struct kref *kref)
  * in-memory topology state from being changed in the middle of critical
  * operations like changing the internal state of payload allocations. This
  * means each branch and port will be considered to be connected to the rest
- * of the topology until it's topology refcount reaches zero. Additionally,
+ * of the topology until its topology refcount reaches zero. Additionally,
  * for ports this means that their associated &struct drm_connector will stay
  * registered with userspace until the port's refcount reaches 0.
  *
@@ -979,8 +979,8 @@ static void drm_dp_free_mst_branch_device(struct kref *kref)
  *    same way as the C pointers used to reference a structure.
  *
  * As you can see in the above figure, every branch increments the topology
- * refcount of it's children, and increments the malloc refcount of it's
- * parent. Additionally, every payload increments the malloc refcount of it's
+ * refcount of its children, and increments the malloc refcount of its
+ * parent. Additionally, every payload increments the malloc refcount of its
  * assigned port by 1.
  *
  * So, what would happen if MSTB #3 from the above figure was unplugged from
@@ -997,9 +997,9 @@ static void drm_dp_free_mst_branch_device(struct kref *kref)
  * of its parent, and finally its own malloc refcount. For MSTB #4 and port
  * #4, this means they both have been disconnected from the topology and freed
  * from memory. But, because payload #2 is still holding a reference to port
- * #3, port #3 is removed from the topology but it's &struct drm_dp_mst_port
+ * #3, port #3 is removed from the topology but its &struct drm_dp_mst_port
  * is still accessible from memory. This also means port #3 has not yet
- * decremented the malloc refcount of MSTB #3, so it's &struct
+ * decremented the malloc refcount of MSTB #3, so its &struct
  * drm_dp_mst_branch will also stay allocated in memory until port #3's
  * malloc refcount reaches 0.
  *
@@ -1139,7 +1139,7 @@ static void drm_dp_destroy_mst_branch_device(struct kref *kref)
 
 /**
  * drm_dp_mst_topology_try_get_mstb() - Increment the topology refcount of a
- * branch device unless its zero
+ * branch device unless it's zero
  * @mstb: &struct drm_dp_mst_branch to increment the topology refcount of
  *
  * Attempts to grab a topology reference to @mstb, if it hasn't yet been
@@ -1265,7 +1265,7 @@ static void drm_dp_destroy_port(struct kref *kref)
 
 /**
  * drm_dp_mst_topology_try_get_port() - Increment the topology refcount of a
- * port unless its zero
+ * port unless it's zero
  * @port: &struct drm_dp_mst_port to increment the topology refcount of
  *
  * Attempts to grab a topology reference to @port, if it hasn't yet been
@@ -1471,7 +1471,7 @@ static bool drm_dp_port_setup_pdt(struct drm_dp_mst_port *port)
 			port->mstb->port_parent = port;
 			/*
 			 * Make sure this port's memory allocation stays
-			 * around until it's child MSTB releases it
+			 * around until its child MSTB releases it
 			 */
 			drm_dp_mst_get_port_malloc(port);
 
@@ -2271,7 +2271,7 @@ static int drm_dp_destroy_payload_step1(struct drm_dp_mst_topology_mgr *mgr,
 					struct drm_dp_payload *payload)
 {
 	DRM_DEBUG_KMS("\n");
-	/* its okay for these to fail */
+	/* it's okay for these to fail */
 	if (port) {
 		drm_dp_payload_send_msg(mgr, port, id, 0);
 	}
@@ -2947,7 +2947,7 @@ enum drm_connector_status drm_dp_mst_detect_port(struct drm_connector *connector
 {
 	enum drm_connector_status status = connector_status_disconnected;
 
-	/* we need to search for the port in the mgr in case its gone */
+	/* we need to search for the port in the mgr in case it's gone */
 	port = drm_dp_mst_topology_get_port_validated(mgr, port);
 	if (!port)
 		return connector_status_disconnected;
@@ -3013,7 +3013,7 @@ struct edid *drm_dp_mst_get_edid(struct drm_connector *connector, struct drm_dp_
 {
 	struct edid *edid = NULL;
 
-	/* we need to search for the port in the mgr in case its gone */
+	/* we need to search for the port in the mgr in case it's gone */
 	port = drm_dp_mst_topology_get_port_validated(mgr, port);
 	if (!port)
 		return NULL;
@@ -3180,7 +3180,7 @@ EXPORT_SYMBOL(drm_dp_atomic_find_vcpi_slots);
  * Releases any VCPI slots that have been allocated to a port in the atomic
  * state. Any atomic drivers which support MST must call this function in
  * their &drm_connector_helper_funcs.atomic_check() callback when the
- * connector will no longer have VCPI allocated (e.g. because it's CRTC was
+ * connector will no longer have VCPI allocated (e.g. because its CRTC was
  * removed) when it had VCPI allocated in the previous atomic state.
  *
  * It is OK to call this even if @port has been removed from the system.
@@ -3268,7 +3268,7 @@ bool drm_dp_mst_allocate_vcpi(struct drm_dp_mst_topology_mgr *mgr,
 	DRM_DEBUG_KMS("initing vcpi for pbn=%d slots=%d\n",
 		      pbn, port->vcpi.num_slots);
 
-	/* Keep port allocated until it's payload has been removed */
+	/* Keep port allocated until its payload has been removed */
 	drm_dp_mst_get_port_malloc(port);
 	drm_dp_mst_topology_put_port(port);
 	return true;
@@ -3300,7 +3300,7 @@ EXPORT_SYMBOL(drm_dp_mst_get_vcpi_slots);
 void drm_dp_mst_reset_vcpi_slots(struct drm_dp_mst_topology_mgr *mgr, struct drm_dp_mst_port *port)
 {
 	/*
-	 * A port with VCPI will remain allocated until it's VCPI is
+	 * A port with VCPI will remain allocated until its VCPI is
 	 * released, no verified ref needed
 	 */
 
@@ -3317,7 +3317,7 @@ void drm_dp_mst_deallocate_vcpi(struct drm_dp_mst_topology_mgr *mgr,
 				struct drm_dp_mst_port *port)
 {
 	/*
-	 * A port with VCPI will remain allocated until it's VCPI is
+	 * A port with VCPI will remain allocated until its VCPI is
 	 * released, no verified ref needed
 	 */
 

drivers/gpu/drm/drm_fb_helper.c

@@ -2483,7 +2483,7 @@ static int drm_pick_crtcs(struct drm_fb_helper *fb_helper,
 /*
  * This function checks if rotation is necessary because of panel orientation
  * and if it is, if it is supported.
- * If rotation is necessary and supported, its gets set in fb_crtc.rotation.
+ * If rotation is necessary and supported, it gets set in fb_crtc.rotation.
  * If rotation is necessary but not supported, a DRM_MODE_ROTATE_* flag gets
  * or-ed into fb_helper->sw_rotations. In drm_setup_crtcs_fb() we check if only
  * one bit is set and then we set fb_info.fbcon_rotate_hint to make fbcon do

drivers/gpu/drm/drm_file.c

@@ -701,7 +701,7 @@ int drm_event_reserve_init(struct drm_device *dev,
 EXPORT_SYMBOL(drm_event_reserve_init);
 
 /**
- * drm_event_cancel_free - free a DRM event and release it's space
+ * drm_event_cancel_free - free a DRM event and release its space
  * @dev: DRM device
  * @p: tracking structure for the pending event
  *

drivers/gpu/drm/drm_framebuffer.c

@@ -773,7 +773,7 @@ EXPORT_SYMBOL(drm_framebuffer_lookup);
  * @fb: fb to unregister
  *
  * Drivers need to call this when cleaning up driver-private framebuffers, e.g.
- * those used for fbdev. Note that the caller must hold a reference of it's own,
+ * those used for fbdev. Note that the caller must hold a reference of its own,
  * i.e. the object may not be destroyed through this call (since it'll lead to a
  * locking inversion).
  *

drivers/gpu/drm/drm_gem.c

@@ -660,7 +660,7 @@ void drm_gem_put_pages(struct drm_gem_object *obj, struct page **pages,
 EXPORT_SYMBOL(drm_gem_put_pages);
 
 /**
- * drm_gem_object_lookup - look up a GEM object from it's handle
+ * drm_gem_object_lookup - look up a GEM object from its handle
  * @filp: DRM file private date
  * @handle: userspace handle
  *

drivers/gpu/drm/drm_mm.c

@@ -816,7 +816,7 @@ EXPORT_SYMBOL(drm_mm_scan_add_block);
  * When the scan list is empty, the selected memory nodes can be freed. An
  * immediately following drm_mm_insert_node_in_range_generic() or one of the
  * simpler versions of that function with !DRM_MM_SEARCH_BEST will then return
- * the just freed block (because its at the top of the free_stack list).
+ * the just freed block (because it's at the top of the free_stack list).
  *
  * Returns:
  * True if this block should be evicted, false otherwise. Will always

drivers/gpu/drm/drm_modes.c

@@ -1272,7 +1272,7 @@ const char *drm_get_mode_status_name(enum drm_mode_status status)
  * @verbose: be verbose about it
  *
  * This helper function can be used to prune a display mode list after
- * validation has been completed. All modes who's status is not MODE_OK will be
+ * validation has been completed. All modes whose status is not MODE_OK will be
  * removed from the list, and if @verbose the status code and mode name is also
  * printed to dmesg.
  */

drivers/gpu/drm/drm_property.c

@@ -866,7 +866,7 @@ err:
  * value doesn't become invalid part way through the property update due to
  * race).  The value returned by reference via 'obj' should be passed back
  * to drm_property_change_valid_put() after the property is set (and the
- * object to which the property is attached has a chance to take it's own
+ * object to which the property is attached has a chance to take its own
  * reference).
  */
 bool drm_property_change_valid_get(struct drm_property *property,

drivers/gpu/drm/drm_vblank.c

@@ -48,7 +48,7 @@
  * Drivers must initialize the vertical blanking handling core with a call to
  * drm_vblank_init(). Minimally, a driver needs to implement
  * &drm_crtc_funcs.enable_vblank and &drm_crtc_funcs.disable_vblank plus call
- * drm_crtc_handle_vblank() in it's vblank interrupt handler for working vblank
+ * drm_crtc_handle_vblank() in its vblank interrupt handler for working vblank
  * support.
  *
  * Vertical blanking interrupts can be enabled by the DRM core or by drivers

include/drm/drm_atomic.h

@@ -192,7 +192,7 @@ struct drm_private_state;
  * private objects. The structure itself is used as a vtable to identify the
  * associated private object type. Each private object type that needs to be
  * added to the atomic states is expected to have an implementation of these
- * hooks and pass a pointer to it's drm_private_state_funcs struct to
+ * hooks and pass a pointer to its drm_private_state_funcs struct to
  * drm_atomic_get_private_obj_state().
  */
 struct drm_private_state_funcs {

include/drm/drm_client.h

@@ -26,7 +26,7 @@ struct drm_client_funcs {
 	 * @unregister:
 	 *
 	 * Called when &drm_device is unregistered. The client should respond by
-	 * releasing it's resources using drm_client_release().
+	 * releasing its resources using drm_client_release().
 	 *
 	 * This callback is optional.
 	 */

include/drm/drm_connector.h

@@ -912,7 +912,7 @@ struct drm_connector {
 	/**
 	 * @ycbcr_420_allowed : This bool indicates if this connector is
 	 * capable of handling YCBCR 420 output. While parsing the EDID
-	 * blocks, its very helpful to know, if the source is capable of
+	 * blocks it's very helpful to know if the source is capable of
 	 * handling YCBCR 420 outputs.
 	 */
 	bool ycbcr_420_allowed;

include/drm/drm_mode_config.h

@@ -361,7 +361,7 @@ struct drm_mode_config {
 	 *
 	 * This is the big scary modeset BKL which protects everything that
 	 * isn't protect otherwise. Scope is unclear and fuzzy, try to remove
-	 * anything from under it's protection and move it into more well-scoped
+	 * anything from under its protection and move it into more well-scoped
 	 * locks.
 	 *
 	 * The one important thing this protects is the use of @acquire_ctx.

include/drm/drm_modeset_helper_vtables.h

@@ -1013,7 +1013,7 @@ struct drm_plane_helper_funcs {
 	 * @prepare_fb:
 	 *
 	 * This hook is to prepare a framebuffer for scanout by e.g. pinning
-	 * it's backing storage or relocating it into a contiguous block of
+	 * its backing storage or relocating it into a contiguous block of
 	 * VRAM. Other possible preparatory work includes flushing caches.
 	 *
 	 * This function must not block for outstanding rendering, since it is

include/drm/drm_modeset_lock.h

@@ -68,7 +68,7 @@ struct drm_modeset_acquire_ctx {
 /**
  * struct drm_modeset_lock - used for locking modeset resources.
  * @mutex: resource locking
- * @head: used to hold it's place on &drm_atomi_state.locked list when
+ * @head: used to hold its place on &drm_atomi_state.locked list when
  *    part of an atomic update
  *
  * Used for locking CRTCs and other modeset resources.

include/drm/ttm/ttm_bo_driver.h

@@ -867,7 +867,7 @@ int ttm_bo_pipeline_move(struct ttm_buffer_object *bo,
  *
  * @bo: A pointer to a struct ttm_buffer_object.
  *
- * Pipelined gutting a BO of it's backing store.
+ * Pipelined gutting a BO of its backing store.
  */
 int ttm_bo_pipeline_gutting(struct ttm_buffer_object *bo);