From: James Cowgill james.cowgill@blaize.com
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.... Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/gpu/drm/panel/panel-orisetech-otm8009a.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/gpu/drm/panel/panel-orisetech-otm8009a.c +++ b/drivers/gpu/drm/panel/panel-orisetech-otm8009a.c @@ -460,7 +460,7 @@ static int otm8009a_probe(struct mipi_ds 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)) {