From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 597C317730 for ; Mon, 15 May 2023 18:05:34 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id B052DC4339B; Mon, 15 May 2023 18:05:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1684173934; bh=B7tV84oscsb2bWeMieYBYBgMZVw1d95Rty4xFOFqe2c=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=luzfl0hUdqITZxQAwZGMQEEi/eFJHVAlEqn699b4ESnWFqbQfr4xRGcO2tqEU3ydI b1jz+xoYJMNW/3oKso7UZrHsM6F2gQB9f/ocgVui9A1PsGv0Jh7bbwBzjemo5In0MB Vl4c27+MlbIh/+UU1ZaNXXUQgiqQuTtvkynhVvkw= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, James Cowgill , Neil Armstrong Subject: [PATCH 5.4 253/282] drm/panel: otm8009a: Set backlight parent to panel device Date: Mon, 15 May 2023 18:30:31 +0200 Message-Id: <20230515161729.867725600@linuxfoundation.org> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20230515161722.146344674@linuxfoundation.org> References: <20230515161722.146344674@linuxfoundation.org> User-Agent: quilt/0.67 Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit From: James Cowgill 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 Cc: stable@vger.kernel.org Reviewed-by: Neil Armstrong Signed-off-by: Neil Armstrong Link: https://patchwork.freedesktop.org/patch/msgid/20230412173450.199592-1-james.cowgill@blaize.com Signed-off-by: Greg Kroah-Hartman --- 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)) {