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drm/panel: otm8009a: Set backlight parent to panel device

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commit ab4f869fba6119997f7630d600049762a2b014fa upstream.

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
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230412173450.199592-1-james.cowgill@blaize.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
James Cowgill 2023-04-12 17:35:07 +00:00 committed by Greg Kroah-Hartman
parent 3e77036246
commit c6bb596624
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/panel/panel-orisetech-otm8009a.c
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@ -460,7 +460,7 @@ static int otm8009a_probe(struct mipi_dsi_device *dsi)
ctx->panel.funcs = &otm8009a_drm_funcs;
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)) {