linux-kernel - [PATCH] media: mali-c55: Fix NULL dev stream alert for tpg sub-device

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Message-Id: <20260113075722.143238-1-imntjempty@163.com>
Date: Tue, 13 Jan 2026 07:57:22 +0000
From: "jempty.liang" <imntjempty@....com>
To: dan.scally@...asonboard.com,
	jacopo.mondi@...asonboard.com,
	mchehab@...nel.org
Cc: linux-media@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	"jempty.liang" <imntjempty@....com>
Subject: [PATCH] media: mali-c55: Fix NULL dev stream alert for tpg sub-device

Fix "(NULL device *): collect_streams: sub-device 'mali-c55 tpg'
does not support streams" by setting `sd->dev = mali_c55->dev`
for isp/resizer/tpg modules.

Signed-off-by: jempty.liang <imntjempty@....com>
---
 drivers/media/platform/arm/mali-c55/mali-c55-isp.c     | 1 +
 drivers/media/platform/arm/mali-c55/mali-c55-resizer.c | 1 +
 drivers/media/platform/arm/mali-c55/mali-c55-tpg.c     | 1 +
 3 files changed, 3 insertions(+)

diff --git a/drivers/media/platform/arm/mali-c55/mali-c55-isp.c b/drivers/media/platform/arm/mali-c55/mali-c55-isp.c
index 497f25fbdd13..ce84aad9f1d5 100644
--- a/drivers/media/platform/arm/mali-c55/mali-c55-isp.c
+++ b/drivers/media/platform/arm/mali-c55/mali-c55-isp.c
@@ -610,6 +610,7 @@ int mali_c55_register_isp(struct mali_c55 *mali_c55)
 	sd->entity.ops = &mali_c55_isp_media_ops;
 	sd->entity.function = MEDIA_ENT_F_PROC_VIDEO_ISP;
 	sd->internal_ops = &mali_c55_isp_internal_ops;
+	sd->dev = mali_c55->dev;
 	strscpy(sd->name, MALI_C55_DRIVER_NAME " isp", sizeof(sd->name));
 
 	isp->pads[MALI_C55_ISP_PAD_SINK_VIDEO].flags = MEDIA_PAD_FL_SINK |
diff --git a/drivers/media/platform/arm/mali-c55/mali-c55-resizer.c b/drivers/media/platform/arm/mali-c55/mali-c55-resizer.c
index a8d739af74b6..c4f46651dcee 100644
--- a/drivers/media/platform/arm/mali-c55/mali-c55-resizer.c
+++ b/drivers/media/platform/arm/mali-c55/mali-c55-resizer.c
@@ -1070,6 +1070,7 @@ static int mali_c55_register_resizer(struct mali_c55 *mali_c55,
 	sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE | V4L2_SUBDEV_FL_STREAMS;
 	sd->entity.function = MEDIA_ENT_F_PROC_VIDEO_SCALER;
 	sd->internal_ops = &mali_c55_resizer_internal_ops;
+	sd->dev = mali_c55->dev;
 
 	rsz->pads[MALI_C55_RSZ_SINK_PAD].flags = MEDIA_PAD_FL_SINK;
 	rsz->pads[MALI_C55_RSZ_SOURCE_PAD].flags = MEDIA_PAD_FL_SOURCE;
diff --git a/drivers/media/platform/arm/mali-c55/mali-c55-tpg.c b/drivers/media/platform/arm/mali-c55/mali-c55-tpg.c
index 1af5d2759a83..894f4cf377af 100644
--- a/drivers/media/platform/arm/mali-c55/mali-c55-tpg.c
+++ b/drivers/media/platform/arm/mali-c55/mali-c55-tpg.c
@@ -370,6 +370,7 @@ int mali_c55_register_tpg(struct mali_c55 *mali_c55)
 	sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE | V4L2_SUBDEV_FL_HAS_EVENTS;
 	sd->entity.function = MEDIA_ENT_F_CAM_SENSOR;
 	sd->internal_ops = &mali_c55_tpg_internal_ops;
+	sd->dev = mali_c55->dev;
 	strscpy(sd->name, MALI_C55_DRIVER_NAME " tpg", sizeof(sd->name));
 
 	pad->flags = MEDIA_PAD_FL_SOURCE;
-- 
2.25.1