Merge tag 'drm-misc-next-fixes-2024-02-29' of https://anongit.freedesktop.org/git/drm/drm-misc into drm-next

Short summary of fixes pull:

i915:
- Fix NULL-pointer deref

imx:
- dcss: Fix resource-size calculation

firmware:
- sysfb: Fix returned error code

Signed-off-by: Dave Airlie <airlied@redhat.com>

From: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20240229085331.GA25863@localhost.localdomain

drivers/firmware/sysfb.c

@@ -127,8 +127,10 @@ static __init int sysfb_init(void)
 	sysfb_apply_efi_quirks();
 
 	parent = sysfb_parent_dev(si);
-	if (IS_ERR(parent))
+	if (IS_ERR(parent)) {
+		ret = PTR_ERR(parent);
 		goto unlock_mutex;
+	}
 
 	/* try to create a simple-framebuffer device */
 	compatible = sysfb_parse_mode(si, &mode);

drivers/gpu/drm/i915/gt/intel_engine_heartbeat.c

@@ -96,8 +96,8 @@ static void heartbeat_commit(struct i915_request *rq,
 static void show_heartbeat(const struct i915_request *rq,
 			   struct intel_engine_cs *engine)
 {
-	struct drm_printer p = drm_dbg_printer(&rq->i915->drm, DRM_UT_DRIVER,
-					       "heartbeat");
+	struct drm_printer p =
+		drm_dbg_printer(&engine->i915->drm, DRM_UT_DRIVER, "heartbeat");
 
 	if (!rq) {
 		intel_engine_dump(engine, &p,

drivers/gpu/drm/imx/dcss/dcss-dev.c

@@ -167,7 +167,6 @@ struct dcss_dev *dcss_dev_create(struct device *dev, bool hdmi_output)
 	struct resource *res;
 	struct dcss_dev *dcss;
 	const struct dcss_type_data *devtype;
-	resource_size_t res_len;
 
 	devtype = of_device_get_match_data(dev);
 	if (!devtype) {
@@ -181,8 +180,7 @@ struct dcss_dev *dcss_dev_create(struct device *dev, bool hdmi_output)
 		return ERR_PTR(-EINVAL);
 	}
 
-	res_len = res->end - res->start;
-	if (!devm_request_mem_region(dev, res->start, res_len, "dcss")) {
+	if (!devm_request_mem_region(dev, res->start, resource_size(res), "dcss")) {
 		dev_err(dev, "cannot request memory region\n");
 		return ERR_PTR(-EBUSY);
 	}