Re: [RESEND PATCH] drm/panel: otm8009a: Set backlight parent to panel device

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On 12/04/2023 19:35, James Cowgill wrote:
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@xxxxxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx
---
  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 b4729a94c34a8..898b892f11439 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);
ctx->bl_dev = devm_backlight_device_register(dev, dev_name(dev),
-						     dsi->host->dev, ctx,
+						     dev, ctx,
  						     &otm8009a_backlight_ops,
  						     NULL);
  	if (IS_ERR(ctx->bl_dev)) {

Reviewed-by: Neil Armstrong <neil.armstrong@xxxxxxxxxx>



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