From nobody Mon Apr 6 00:09:41 2026 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4E56CC6FA82 for ; Tue, 13 Sep 2022 09:07:24 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231402AbiIMJHW (ORCPT ); Tue, 13 Sep 2022 05:07:22 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55188 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230408AbiIMJHT (ORCPT ); Tue, 13 Sep 2022 05:07:19 -0400 Received: from madras.collabora.co.uk (madras.collabora.co.uk [46.235.227.172]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C4A515509B for ; Tue, 13 Sep 2022 02:07:18 -0700 (PDT) Received: from benjamin-XPS-13-9310.. (unknown [89.101.193.68]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: benjamin.gaignard) by madras.collabora.co.uk (Postfix) with ESMTPSA id 0E94F6602006; Tue, 13 Sep 2022 10:07:17 +0100 (BST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1663060037; bh=4FYzYAq78L/H37k97U6Zxjw0N7leWulRRE9rHyIP+b0=; h=From:To:Cc:Subject:Date:From; b=g6ExAZPeFs9W5nvE3hrCzpUx1HHIy/t6o+Mp/Q7InLnxuQMPVNqFYaQoa/mVuP2CO J7zrBoPvNwO1owzSNOMhRcuDns6vf/Ao7Ipqqo8zDfh/O30dqmlrbLA/O7DNXvzlIG iWFULEMLF1kDf6sEqq2QG9E/W3dIfQWqbkNlL6zo2BuRAKUSXChDZ4lGyJU+0838Ad NdJ0FFhl6iOfu4HZFvcP3wtnbrHySA0YoLSk/dxR3BZFL1yjDveMzC25zJRaqteoBg Bg2sSYM18gS1nO2CHtpmPQrE5m2bB5n2nK/TqnsKt7/GA7Vyv3+dmJ8jOdAPWNqb/T Z1gCg+qHVwoRA== From: Benjamin Gaignard To: shawnguo@kernel.org, s.hauer@pengutronix.de, kernel@pengutronix.de, festevam@gmail.com, linux-imx@nxp.com Cc: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, kernel@collabora.com, Benjamin Gaignard Subject: [PATCH] soc: imx: imx8m-blk-ctrl: Defer probe if 'bus' genpd is not yet ready Date: Tue, 13 Sep 2022 11:06:55 +0200 Message-Id: <20220913090655.39778-1-benjamin.gaignard@collabora.com> X-Mailer: git-send-email 2.32.0 MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" Depending of the boot sequence 'bus' genpd could be probed after imx8m-blk-= ctrl which led driver probe to fail. Change the returned error to allow to defer the probe in this case. Signed-off-by: Benjamin Gaignard --- drivers/soc/imx/imx8m-blk-ctrl.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/soc/imx/imx8m-blk-ctrl.c b/drivers/soc/imx/imx8m-blk-c= trl.c index dff7529268e4..99f5226a465b 100644 --- a/drivers/soc/imx/imx8m-blk-ctrl.c +++ b/drivers/soc/imx/imx8m-blk-ctrl.c @@ -215,8 +215,7 @@ static int imx8m_blk_ctrl_probe(struct platform_device = *pdev) =20 bc->bus_power_dev =3D genpd_dev_pm_attach_by_name(dev, "bus"); if (IS_ERR(bc->bus_power_dev)) - return dev_err_probe(dev, PTR_ERR(bc->bus_power_dev), - "failed to attach power domain \"bus\"\n"); + return -EPROBE_DEFER; =20 for (i =3D 0; i < bc_data->num_domains; i++) { const struct imx8m_blk_ctrl_domain_data *data =3D &bc_data->domains[i]; --=20 2.32.0