Merge tag 'drm-misc-fixes-2025-11-20' of https://gitlab.freedesktop.org/drm/misc/kernel into drm-fixes

Short summary of fixes pull:

atomic:
- Return error codes on failed blob creation for planes

nouveau:
- Fix memory leak

tegra:
- Fix device ref counting
- Fix pid ref counting
- Revert booting on Pixel C

Signed-off-by: Dave Airlie <[email protected]>

From: Thomas Zimmermann <[email protected]>
Link: https://patch.msgid.link/[email protected]

Author: airlied

drivers/gpu/drm/drm_plane.c

@@ -210,7 +210,7 @@ static struct drm_property_blob *create_in_format_blob(struct drm_device *dev,
 	formats_size = sizeof(__u32) * plane->format_count;
 	if (WARN_ON(!formats_size)) {
 		/* 0 formats are never expected */
-		return 0;
+		return ERR_PTR(-EINVAL);
 	}
 
 	modifiers_size =
@@ -226,7 +226,7 @@ static struct drm_property_blob *create_in_format_blob(struct drm_device *dev,
 
 	blob = drm_property_create_blob(dev, blob_size, NULL);
 	if (IS_ERR(blob))
-		return NULL;
+		return blob;
 
 	blob_data = blob->data;
 	blob_data->version = FORMAT_BLOB_CURRENT;

drivers/gpu/drm/nouveau/nvkm/falcon/fw.c

@@ -159,6 +159,8 @@ nvkm_falcon_fw_dtor(struct nvkm_falcon_fw *fw)
 	nvkm_memory_unref(&fw->inst);
 	nvkm_falcon_fw_dtor_sigs(fw);
 	nvkm_firmware_dtor(&fw->fw);
+	kfree(fw->boot);
+	fw->boot = NULL;
 }
 
 static const struct nvkm_firmware_func

drivers/gpu/drm/tegra/dc.c

@@ -3148,6 +3148,7 @@ static int tegra_dc_couple(struct tegra_dc *dc)
 		dc->client.parent = &parent->client;
 
 		dev_dbg(dc->dev, "coupled to %s\n", dev_name(companion));
+		put_device(companion);
 	}
 
 	return 0;

drivers/gpu/drm/tegra/dsi.c

@@ -913,15 +913,6 @@ static void tegra_dsi_encoder_enable(struct drm_encoder *encoder)
 	u32 value;
 	int err;
 
-	/* If the bootloader enabled DSI it needs to be disabled
-	 * in order for the panel initialization commands to be
-	 * properly sent.
-	 */
-	value = tegra_dsi_readl(dsi, DSI_POWER_CONTROL);
-
-	if (value & DSI_POWER_CONTROL_ENABLE)
-		tegra_dsi_disable(dsi);
-
 	err = tegra_dsi_prepare(dsi);
 	if (err < 0) {
 		dev_err(dsi->dev, "failed to prepare: %d\n", err);

drivers/gpu/drm/tegra/uapi.c

@@ -114,9 +114,12 @@ int tegra_drm_ioctl_channel_open(struct drm_device *drm, void *data, struct drm_
 		if (err)
 			goto put_channel;
 
-		if (supported)
+		if (supported) {
+			struct pid *pid = get_task_pid(current, PIDTYPE_TGID);
 			context->memory_context = host1x_memory_context_alloc(
-				host, client->base.dev, get_task_pid(current, PIDTYPE_TGID));
+				host, client->base.dev, pid);
+			put_pid(pid);
+		}
 
 		if (IS_ERR(context->memory_context)) {
 			if (PTR_ERR(context->memory_context) != -EOPNOTSUPP) {