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 54A2F15442C; Thu, 3 Jul 2025 15:07:12 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751555232; cv=none; b=XfHQ1yAG8v6B3YjErzfv1ciY6cVbUGBhTzH98EQ0L8qXlFoI4ijSu1+aD+z8XQ5LENSb9eAWTTq5+ZBU+Ao4GhpSIlyHDase6TuZeGh6w8YDMZUylRkBfq7n0iEsIFespktyiu254w8h2epYYtOObMs6ueWCZWmLzeloInChk3k= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751555232; c=relaxed/simple; bh=knde+VEcxS1NxzUOaqlrpOMygIp5TS2QtdCOaqah0NY=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=J0s444MPnL7riyvl53PknVZfPDe+MunOMdkUF13rEE5NiKBao/2fIFK/N+vtU0rrSvb+vaDcC5g0lEB59Jjxv9J8+QP5XwYfSOpSK8jY6ooZpf4dqQ4REGOxygSOeefpqpF7BEzvncSJerza9aTYeE0n6xz6qX1D4oABx03bvco= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=go9YUxQQ; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="go9YUxQQ" Received: by smtp.kernel.org (Postfix) with ESMTPSA id B8EADC4CEE3; Thu, 3 Jul 2025 15:07:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1751555232; bh=knde+VEcxS1NxzUOaqlrpOMygIp5TS2QtdCOaqah0NY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=go9YUxQQVFnGzZdOxpCA11aOodzbJNlnRNL5Y932u98PzKpe4+ErkYGHv0CHNWuVS q/btHXSlUlk0UBFAc21xNioCuR2BYX3e0kcxlsAWKCVWfDwsZUoXZd65aDUp26Rehe a/OlWazPYvzuaCBPC2uwSyvqs+b0mgEMYfaiNA8Y= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Dmitry Baryshkov , Tomi Valkeinen , Aradhya Bhatia , Aradhya Bhatia , Dmitry Baryshkov Subject: [PATCH 6.15 216/263] drm/bridge: cdns-dsi: Fix connecting to next bridge Date: Thu, 3 Jul 2025 16:42:16 +0200 Message-ID: <20250703144013.046158132@linuxfoundation.org> X-Mailer: git-send-email 2.50.0 In-Reply-To: <20250703144004.276210867@linuxfoundation.org> References: <20250703144004.276210867@linuxfoundation.org> User-Agent: quilt/0.68 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.15-stable review patch. If anyone has any objections, please let me know. ------------------ From: Aradhya Bhatia commit 688eb4d465484bc2a3471a6a6f06f833b58c7867 upstream. Fix the OF node pointer passed to the of_drm_find_bridge() call to find the next bridge in the display chain. The code to find the next panel (and create its panel-bridge) works fine, but to find the next (non-panel) bridge does not. To find the next bridge in the pipeline, we need to pass "np" - the OF node pointer of the next entity in the devicetree chain. Passing "of_node" to of_drm_find_bridge (which is what the code does currently) will fetch the bridge for the cdns-dsi which is not what's required. Fix that. Fixes: e19233955d9e ("drm/bridge: Add Cadence DSI driver") Cc: stable@vger.kernel.org Reviewed-by: Dmitry Baryshkov Reviewed-by: Tomi Valkeinen Tested-by: Tomi Valkeinen Signed-off-by: Aradhya Bhatia Signed-off-by: Aradhya Bhatia Link: https://lore.kernel.org/r/20250329113925.68204-2-aradhya.bhatia@linux.dev Signed-off-by: Dmitry Baryshkov Signed-off-by: Greg Kroah-Hartman --- drivers/gpu/drm/bridge/cadence/cdns-dsi-core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/gpu/drm/bridge/cadence/cdns-dsi-core.c +++ b/drivers/gpu/drm/bridge/cadence/cdns-dsi-core.c @@ -958,7 +958,7 @@ static int cdns_dsi_attach(struct mipi_d bridge = drm_panel_bridge_add_typed(panel, DRM_MODE_CONNECTOR_DSI); } else { - bridge = of_drm_find_bridge(dev->dev.of_node); + bridge = of_drm_find_bridge(np); if (!bridge) bridge = ERR_PTR(-EINVAL); }