Merge tag 'drm-misc-fixes-2024-09-26' of...

Merge tag 'drm-misc-fixes-2024-09-26' of https://gitlab.freedesktop.org/drm/misc/kernel into drm-fixes

Short summary of fixes pull:

atomic:
- Use correct type when reading damage rectangles

display:
- Fix kernel docs

dp-mst:
- Fix DSC decompression detection

hdmi:
- Fix infoframe size

panthor:
- Fix locking

sched:
- Update maintainers
- Fix race condition whne queueing up jobs

sysfb:
- Disable sysfb if framebuffer parent device is unknown

vbox:
- Fix VLA handling
Signed-off-by: Dave Airlie <airlied@redhat.com>

From: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20240926121045.GA561653@localhost.localdomain

Documentation/gpu/drm-kms-helpers.rst

@@ -181,7 +181,7 @@ Bridge Operations
 Bridge Connector Helper
 -----------------------
 
-.. kernel-doc:: drivers/gpu/drm/drm_bridge_connector.c
+.. kernel-doc:: drivers/gpu/drm/display/drm_bridge_connector.c
    :doc: overview
 
 
@@ -204,7 +204,7 @@ MIPI-DSI bridge operation
 Bridge Connector Helper Reference
 ---------------------------------
 
-.. kernel-doc:: drivers/gpu/drm/drm_bridge_connector.c
+.. kernel-doc:: drivers/gpu/drm/display/drm_bridge_connector.c
    :export:
 
 Panel-Bridge Helper Reference

MAINTAINERS

@@ -7832,6 +7832,8 @@ F:	drivers/gpu/drm/xlnx/
 DRM GPU SCHEDULER
 M:	Luben Tuikov <ltuikov89@gmail.com>
 M:	Matthew Brost <matthew.brost@intel.com>
+M:	Danilo Krummrich <dakr@kernel.org>
+M:	Philipp Stanner <pstanner@redhat.com>
 L:	dri-devel@lists.freedesktop.org
 S:	Maintained
 T:	git https://gitlab.freedesktop.org/drm/misc/kernel.git

drivers/firmware/sysfb.c

@@ -67,9 +67,11 @@ static bool sysfb_unregister(void)
 void sysfb_disable(struct device *dev)
 {
 	struct screen_info *si = &screen_info;
+	struct device *parent;
 
 	mutex_lock(&disable_lock);
-	if (!dev || dev == sysfb_parent_dev(si)) {
+	parent = sysfb_parent_dev(si);
+	if (!dev || !parent || dev == parent) {
 		sysfb_unregister();
 		disabled = true;
 	}

drivers/gpu/drm/display/drm_dp_mst_topology.c

@@ -6083,6 +6083,7 @@ struct drm_dp_aux *drm_dp_mst_dsc_aux_for_port(struct drm_dp_mst_port *port)
 	struct drm_dp_aux *immediate_upstream_aux;
 	struct drm_dp_mst_port *fec_port;
 	struct drm_dp_desc desc = {};
+	u8 upstream_dsc;
 	u8 endpoint_fec;
 	u8 endpoint_dsc;
 
@@ -6109,8 +6110,6 @@ struct drm_dp_aux *drm_dp_mst_dsc_aux_for_port(struct drm_dp_mst_port *port)
 
 	/* DP-to-DP peer device */
 	if (drm_dp_mst_is_virtual_dpcd(immediate_upstream_port)) {
-		u8 upstream_dsc;
-
 		if (drm_dp_dpcd_read(&port->aux,
 				     DP_DSC_SUPPORT, &endpoint_dsc, 1) != 1)
 			return NULL;
@@ -6156,6 +6155,13 @@ struct drm_dp_aux *drm_dp_mst_dsc_aux_for_port(struct drm_dp_mst_port *port)
 	if (drm_dp_has_quirk(&desc, DP_DPCD_QUIRK_DSC_WITHOUT_VIRTUAL_DPCD)) {
 		u8 dpcd_ext[DP_RECEIVER_CAP_SIZE];
 
+		if (drm_dp_dpcd_read(immediate_upstream_aux,
+				     DP_DSC_SUPPORT, &upstream_dsc, 1) != 1)
+			return NULL;
+
+		if (!(upstream_dsc & DP_DSC_DECOMPRESSION_IS_SUPPORTED))
+			return NULL;
+
 		if (drm_dp_read_dpcd_caps(immediate_upstream_aux, dpcd_ext) < 0)
 			return NULL;
 

drivers/gpu/drm/display/drm_hdmi_state_helper.c

@@ -521,8 +521,6 @@ int drm_atomic_helper_connector_hdmi_check(struct drm_connector *connector,
 }
 EXPORT_SYMBOL(drm_atomic_helper_connector_hdmi_check);
 
-#define HDMI_MAX_INFOFRAME_SIZE		29
-
 static int clear_device_infoframe(struct drm_connector *connector,
 				  enum hdmi_infoframe_type type)
 {
@@ -563,7 +561,7 @@ static int write_device_infoframe(struct drm_connector *connector,
 {
 	const struct drm_connector_hdmi_funcs *funcs = connector->hdmi.funcs;
 	struct drm_device *dev = connector->dev;
-	u8 buffer[HDMI_MAX_INFOFRAME_SIZE];
+	u8 buffer[HDMI_INFOFRAME_SIZE(MAX)];
 	int ret;
 	int len;
 

drivers/gpu/drm/drm_atomic_uapi.c

@@ -543,7 +543,7 @@ static int drm_atomic_plane_set_property(struct drm_plane *plane,
 					&state->fb_damage_clips,
 					val,
 					-1,
-					sizeof(struct drm_rect),
+					sizeof(struct drm_mode_rect),
 					&replaced);
 		return ret;
 	} else if (property == plane->scaling_filter_property) {

drivers/gpu/drm/drm_debugfs.c

@@ -520,8 +520,6 @@ static const struct file_operations drm_connector_fops = {
 	.write = connector_write
 };
 
-#define HDMI_MAX_INFOFRAME_SIZE		29
-
 static ssize_t
 audio_infoframe_read(struct file *filp, char __user *ubuf, size_t count, loff_t *ppos)
 {
@@ -579,7 +577,7 @@ static ssize_t _f##_read_infoframe(struct file *filp, \
 	struct drm_connector *connector; \
 	union hdmi_infoframe *frame; \
 	struct drm_device *dev; \
-	u8 buf[HDMI_MAX_INFOFRAME_SIZE]; \
+	u8 buf[HDMI_INFOFRAME_SIZE(MAX)]; \
 	ssize_t len = 0; \
 	\
 	connector = filp->private_data; \

drivers/gpu/drm/panthor/panthor_sched.c

@@ -3242,6 +3242,18 @@ int panthor_group_destroy(struct panthor_file *pfile, u32 group_handle)
 	return 0;
 }
 
+static struct panthor_group *group_from_handle(struct panthor_group_pool *pool,
+					       u32 group_handle)
+{
+	struct panthor_group *group;
+
+	xa_lock(&pool->xa);
+	group = group_get(xa_load(&pool->xa, group_handle));
+	xa_unlock(&pool->xa);
+
+	return group;
+}
+
 int panthor_group_get_state(struct panthor_file *pfile,
 			    struct drm_panthor_group_get_state *get_state)
 {
@@ -3253,7 +3265,7 @@ int panthor_group_get_state(struct panthor_file *pfile,
 	if (get_state->pad)
 		return -EINVAL;
 
-	group = group_get(xa_load(&gpool->xa, get_state->group_handle));
+	group = group_from_handle(gpool, get_state->group_handle);
 	if (!group)
 		return -EINVAL;
 
@@ -3384,7 +3396,7 @@ panthor_job_create(struct panthor_file *pfile,
 	job->call_info.latest_flush = qsubmit->latest_flush;
 	INIT_LIST_HEAD(&job->node);
 
-	job->group = group_get(xa_load(&gpool->xa, group_handle));
+	job->group = group_from_handle(gpool, group_handle);
 	if (!job->group) {
 		ret = -EINVAL;
 		goto err_put_job;

drivers/gpu/drm/scheduler/sched_entity.c

@@ -380,7 +380,7 @@ static void drm_sched_entity_wakeup(struct dma_fence *f,
 		container_of(cb, struct drm_sched_entity, cb);
 
 	drm_sched_entity_clear_dep(f, cb);
-	drm_sched_wakeup(entity->rq->sched, entity);
+	drm_sched_wakeup(entity->rq->sched);
 }
 
 /**
@@ -612,7 +612,7 @@ void drm_sched_entity_push_job(struct drm_sched_job *sched_job)
 		if (drm_sched_policy == DRM_SCHED_POLICY_FIFO)
 			drm_sched_rq_update_fifo(entity, submit_ts);
 
-		drm_sched_wakeup(entity->rq->sched, entity);
+		drm_sched_wakeup(entity->rq->sched);
 	}
 }
 EXPORT_SYMBOL(drm_sched_entity_push_job);

drivers/gpu/drm/scheduler/sched_main.c

@@ -1013,15 +1013,12 @@ EXPORT_SYMBOL(drm_sched_job_cleanup);
 /**
  * drm_sched_wakeup - Wake up the scheduler if it is ready to queue
  * @sched: scheduler instance
- * @entity: the scheduler entity
  *
  * Wake up the scheduler if we can queue jobs.
  */
-void drm_sched_wakeup(struct drm_gpu_scheduler *sched,
-		      struct drm_sched_entity *entity)
+void drm_sched_wakeup(struct drm_gpu_scheduler *sched)
 {
-	if (drm_sched_can_queue(sched, entity))
-		drm_sched_run_job_queue(sched);
+	drm_sched_run_job_queue(sched);
 }
 
 /**

drivers/gpu/drm/vboxvideo/hgsmi_base.c

@@ -139,7 +139,15 @@ int hgsmi_update_pointer_shape(struct gen_pool *ctx, u32 flags,
 		flags |= VBOX_MOUSE_POINTER_VISIBLE;
 	}
 
-	p = hgsmi_buffer_alloc(ctx, sizeof(*p) + pixel_len, HGSMI_CH_VBVA,
+	/*
+	 * The 4 extra bytes come from switching struct vbva_mouse_pointer_shape
+	 * from having a 4 bytes fixed array at the end to using a proper VLA
+	 * at the end. These 4 extra bytes were not subtracted from sizeof(*p)
+	 * before the switch to the VLA, so this way the behavior is unchanged.
+	 * Chances are these 4 extra bytes are not necessary but they are kept
+	 * to avoid regressions.
+	 */
+	p = hgsmi_buffer_alloc(ctx, sizeof(*p) + pixel_len + 4, HGSMI_CH_VBVA,
 			       VBVA_MOUSE_POINTER_SHAPE);
 	if (!p)
 		return -ENOMEM;

drivers/gpu/drm/vboxvideo/vboxvideo.h

@@ -351,10 +351,8 @@ struct vbva_mouse_pointer_shape {
 	 * Bytes in the gap between the AND and the XOR mask are undefined.
 	 * XOR mask scanlines have no gap between them and size of XOR mask is:
 	 * xor_len = width * 4 * height.
-	 *
-	 * Preallocate 4 bytes for accessing actual data as p->data.
 	 */
-	u8 data[4];
+	u8 data[];
 } __packed;
 
 /* pointer is visible */

include/drm/gpu_scheduler.h

@@ -574,7 +574,7 @@ void drm_sched_entity_modify_sched(struct drm_sched_entity *entity,
 
 void drm_sched_tdr_queue_imm(struct drm_gpu_scheduler *sched);
 void drm_sched_job_cleanup(struct drm_sched_job *job);
-void drm_sched_wakeup(struct drm_gpu_scheduler *sched, struct drm_sched_entity *entity);
+void drm_sched_wakeup(struct drm_gpu_scheduler *sched);
 bool drm_sched_wqueue_ready(struct drm_gpu_scheduler *sched);
 void drm_sched_wqueue_stop(struct drm_gpu_scheduler *sched);
 void drm_sched_wqueue_start(struct drm_gpu_scheduler *sched);

include/linux/hdmi.h

@@ -59,6 +59,15 @@ enum hdmi_infoframe_type {
 #define HDMI_DRM_INFOFRAME_SIZE    26
 #define HDMI_VENDOR_INFOFRAME_SIZE  4
 
+/*
+ * HDMI 1.3a table 5-14 states that the largest InfoFrame_length is 27,
+ * not including the packet header or checksum byte. We include the
+ * checksum byte in HDMI_INFOFRAME_HEADER_SIZE, so this should allow
+ * HDMI_INFOFRAME_SIZE(MAX) to be the largest buffer we could ever need
+ * for any HDMI infoframe.
+ */
+#define HDMI_MAX_INFOFRAME_SIZE    27
+
 #define HDMI_INFOFRAME_SIZE(type)	\
 	(HDMI_INFOFRAME_HEADER_SIZE + HDMI_ ## type ## _INFOFRAME_SIZE)