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dmarc=none (p=none dis=none) header.from=linuxfoundation.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-rockchip-bounces+patchwork-linux-rockchip=patchwork.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=XO+jEe8NeJPYTGhUZpJaCgSj5svKJtbhB8DaH2n0TXc=; b=MJzSycniM/lnpN 5n80vSyhoF1FbAeOpjKwok/qE7GAc7yoErUz72qRbDP54+WwJvoeeD71yTOD2WxVsgE3ImG+P+i7t VAk1b9cLEkoYaRkIVgp6I1UX/71NHVfFy6RVje1B6NDrXKzm/xK72uGrnHhnrabAq1cwavYVIRBBh MKof567jtdanF7uyLa+1BM5ml0fZEe41xdyEsFlz2WE/VX41+lNP+RSJBTqFYSmApZINqdqp4EjtZ idxkjXmQsymZrOnbWTT7kD7slBZG5dxSvF1gDxuWfClqyOtjFmOZTE5N4jZKQTNg3o1cfgqanF0UA QJvr6lzxnJkjiaygqy5Q==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.2 #3 (Red Hat Linux)) id 1iHAZG-0006vc-3X; Sun, 06 Oct 2019 17:43:38 +0000 Received: from mail.kernel.org ([198.145.29.99]) by bombadil.infradead.org with esmtps (Exim 4.92.2 #3 (Red Hat Linux)) id 1iHAZC-0006uZ-MA for linux-rockchip@lists.infradead.org; Sun, 06 Oct 2019 17:43:36 +0000 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 940CC20700; Sun, 6 Oct 2019 17:43:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1570383814; bh=q7LE7xSjAk2WfDmqoRiEwsDQ5sKIVq8bwyqwusRYBgk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=XVXso4I+DhFirg+KpFkF2WG/Oj7FAJioNfwBKmMHgJhSHztHF7n+1vEgq0aWxGfUV kFDot18ADMbOA4hu5GawQaCVB7oKitqnMDigFm9trmAgjLqerkoGvyXbGMpS4QOmA9 XQWCJTUiqivflVHRyI5NpGNA/+KE7oGb66ufrtLI= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Subject: [PATCH 5.3 105/166] PCI: rockchip: Propagate errors for optional regulators Date: Sun, 6 Oct 2019 19:21:11 +0200 Message-Id: <20191006171222.335656092@linuxfoundation.org> X-Mailer: git-send-email 2.23.0 In-Reply-To: <20191006171212.850660298@linuxfoundation.org> References: <20191006171212.850660298@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20191006_104334_770526_91787F0D X-CRM114-Status: GOOD ( 13.26 ) X-Spam-Score: -5.0 (-----) X-Spam-Report: SpamAssassin version 3.4.2 on bombadil.infradead.org summary: Content analysis details: (-5.0 points) pts rule name description ---- ---------------------- -------------------------------------------------- -5.0 RCVD_IN_DNSWL_HI RBL: Sender listed at https://www.dnswl.org/, high trust [198.145.29.99 listed in list.dnswl.org] 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record -0.0 SPF_PASS SPF: sender matches SPF record -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.0 DKIMWL_WL_HIGH DKIMwl.org - Whitelisted High sender X-BeenThere: linux-rockchip@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Upstream kernel work for Rockchip platforms List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Sasha Levin , Lorenzo Pieralisi , Heiko Stuebner , Greg Kroah-Hartman , Shawn Lin , stable@vger.kernel.org, linux-rockchip@lists.infradead.org, Andrew Murray , Thierry Reding Sender: "Linux-rockchip" Errors-To: linux-rockchip-bounces+patchwork-linux-rockchip=patchwork.kernel.org@lists.infradead.org From: Thierry Reding [ Upstream commit 0e3ff0ac5f71bdb6be2a698de0ed0c7e6e738269 ] regulator_get_optional() can fail for a number of reasons besides probe deferral. It can for example return -ENOMEM if it runs out of memory as it tries to allocate data structures. Propagating only -EPROBE_DEFER is problematic because it results in these legitimately fatal errors being treated as "regulator not specified in DT". What we really want is to ignore the optional regulators only if they have not been specified in DT. regulator_get_optional() returns -ENODEV in this case, so that's the special case that we need to handle. So we propagate all errors, except -ENODEV, so that real failures will still cause the driver to fail probe. Tested-by: Heiko Stuebner Signed-off-by: Thierry Reding Signed-off-by: Lorenzo Pieralisi Reviewed-by: Andrew Murray Reviewed-by: Heiko Stuebner Acked-by: Shawn Lin Cc: Shawn Lin Cc: Heiko Stuebner Cc: linux-rockchip@lists.infradead.org Signed-off-by: Sasha Levin --- drivers/pci/controller/pcie-rockchip-host.c | 16 ++++++++-------- 1 file changed, 8 insertions(+), 8 deletions(-) diff --git a/drivers/pci/controller/pcie-rockchip-host.c b/drivers/pci/controller/pcie-rockchip-host.c index 8d20f1793a618..ef8e677ce9d11 100644 --- a/drivers/pci/controller/pcie-rockchip-host.c +++ b/drivers/pci/controller/pcie-rockchip-host.c @@ -608,29 +608,29 @@ static int rockchip_pcie_parse_host_dt(struct rockchip_pcie *rockchip) rockchip->vpcie12v = devm_regulator_get_optional(dev, "vpcie12v"); if (IS_ERR(rockchip->vpcie12v)) { - if (PTR_ERR(rockchip->vpcie12v) == -EPROBE_DEFER) - return -EPROBE_DEFER; + if (PTR_ERR(rockchip->vpcie12v) != -ENODEV) + return PTR_ERR(rockchip->vpcie12v); dev_info(dev, "no vpcie12v regulator found\n"); } rockchip->vpcie3v3 = devm_regulator_get_optional(dev, "vpcie3v3"); if (IS_ERR(rockchip->vpcie3v3)) { - if (PTR_ERR(rockchip->vpcie3v3) == -EPROBE_DEFER) - return -EPROBE_DEFER; + if (PTR_ERR(rockchip->vpcie3v3) != -ENODEV) + return PTR_ERR(rockchip->vpcie3v3); dev_info(dev, "no vpcie3v3 regulator found\n"); } rockchip->vpcie1v8 = devm_regulator_get_optional(dev, "vpcie1v8"); if (IS_ERR(rockchip->vpcie1v8)) { - if (PTR_ERR(rockchip->vpcie1v8) == -EPROBE_DEFER) - return -EPROBE_DEFER; + if (PTR_ERR(rockchip->vpcie1v8) != -ENODEV) + return PTR_ERR(rockchip->vpcie1v8); dev_info(dev, "no vpcie1v8 regulator found\n"); } rockchip->vpcie0v9 = devm_regulator_get_optional(dev, "vpcie0v9"); if (IS_ERR(rockchip->vpcie0v9)) { - if (PTR_ERR(rockchip->vpcie0v9) == -EPROBE_DEFER) - return -EPROBE_DEFER; + if (PTR_ERR(rockchip->vpcie0v9) != -ENODEV) + return PTR_ERR(rockchip->vpcie0v9); dev_info(dev, "no vpcie0v9 regulator found\n"); }