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From:   James Cowgill <james.cowgill@blaize.com>
To:     Thierry Reding <thierry.reding@gmail.com>,
        Sam Ravnborg <sam@ravnborg.org>,
        David Airlie <airlied@gmail.com>,
        Daniel Vetter <daniel@ffwll.ch>,
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CC:     James Cowgill <james.cowgill@blaize.com>,
        "stable@vger.kernel.org" <stable@vger.kernel.org>,
        Thierry Reding <treding@nvidia.com>,
        "dri-devel@lists.freedesktop.org" <dri-devel@lists.freedesktop.org>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: [PATCH] drm/panel: otm8009a: Set backlight parent to panel device
Thread-Topic: [PATCH] drm/panel: otm8009a: Set backlight parent to panel
 device
Thread-Index: AQHZD7/yW1tRwpgRQkCNYshTJ7Gg4g==
Date:   Wed, 14 Dec 2022 13:28:26 +0000
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This is the logical place to put the backlight device, and it also
fixes a kernel crash if the MIPI host is removed. Previously the
backlight device would be unregistered twice when this happened - once
as a child of the MIPI host through `mipi_dsi_host_unregister`, and
once when the panel device is destroyed.

Fixes: 12a6cbd4f3f1 ("drm/panel: otm8009a: Use new backlight API")
Signed-off-by: James Cowgill <james.cowgill@blaize.com>
Cc: stable@vger.kernel.org
---
 drivers/gpu/drm/panel/panel-orisetech-otm8009a.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/panel/panel-orisetech-otm8009a.c b/drivers/gpu=
/drm/panel/panel-orisetech-otm8009a.c
index b4729a94c34a..898b892f1143 100644
--- a/drivers/gpu/drm/panel/panel-orisetech-otm8009a.c
+++ b/drivers/gpu/drm/panel/panel-orisetech-otm8009a.c
@@ -471,7 +471,7 @@ static int otm8009a_probe(struct mipi_dsi_device *dsi)
 		       DRM_MODE_CONNECTOR_DSI);
=20
 	ctx->bl_dev =3D devm_backlight_device_register(dev, dev_name(dev),
-						     dsi->host->dev, ctx,
+						     dev, ctx,
 						     &otm8009a_backlight_ops,
 						     NULL);
 	if (IS_ERR(ctx->bl_dev)) {
--=20
2.38.1