linux-kernel - [PATCH v4 07/10] drm/msm: bail out late_init

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Message-Id: <20250705-msm-gpu-split-v4-7-fb470c481131@oss.qualcomm.com>
Date: Sat, 05 Jul 2025 13:02:32 +0300
From: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
To: Rob Clark <robin.clark@....qualcomm.com>,
        Dmitry Baryshkov <lumag@...nel.org>,
        Abhinav Kumar <abhinav.kumar@...ux.dev>,
        Jessica Zhang <jessica.zhang@....qualcomm.com>,
        Sean Paul <sean@...rly.run>,
        Marijn Suijten <marijn.suijten@...ainline.org>,
        David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>,
        Konrad Dybcio <konradybcio@...nel.org>
Cc: linux-arm-msm@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        freedreno@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Subject: [PATCH v4 07/10] drm/msm: bail out late_init_minor() if it is not
 a GPU device

Both perf and hangrd make sense only for GPU devices. Bail out if we are
registering a KMS-only device.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
---
 drivers/gpu/drm/msm/msm_debugfs.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/gpu/drm/msm/msm_debugfs.c b/drivers/gpu/drm/msm/msm_debugfs.c
index 4680ccf3e72fa5c31afda5665defe71d1f238dac..bbda865addae2e0ef5bb175bec0ed219cd0d9988 100644
--- a/drivers/gpu/drm/msm/msm_debugfs.c
+++ b/drivers/gpu/drm/msm/msm_debugfs.c
@@ -325,11 +325,16 @@ static struct drm_info_list msm_debugfs_list[] = {
 
 static int late_init_minor(struct drm_minor *minor)
 {
+	struct drm_device *dev = minor->dev;
+	struct msm_drm_private *priv = dev->dev_private;
 	int ret;
 
 	if (!minor)
 		return 0;
 
+	if (!priv->gpu_pdev)
+		return 0;
+
 	ret = msm_rd_debugfs_init(minor);
 	if (ret) {
 		DRM_DEV_ERROR(minor->dev->dev, "could not install rd debugfs\n");

-- 
2.39.5