From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,UNPARSEABLE_RELAY, URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id BF425C43381 for ; Sun, 31 Mar 2019 00:46:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 8912C20850 for ; Sun, 31 Mar 2019 00:46:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731055AbfCaAqG (ORCPT ); Sat, 30 Mar 2019 20:46:06 -0400 Received: from Mailgw01.mediatek.com ([1.203.163.78]:27871 "EHLO mailgw01.mediatek.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1730998AbfCaAqG (ORCPT ); Sat, 30 Mar 2019 20:46:06 -0400 X-UUID: f17aa5f617074c0da9cb38324430d645-20190331 X-UUID: f17aa5f617074c0da9cb38324430d645-20190331 Received: from mtkcas34.mediatek.inc [(172.27.4.253)] by mailgw01.mediatek.com (envelope-from ) (mailgw01.mediatek.com ESMTP with TLS) with ESMTP id 2115593357; Sun, 31 Mar 2019 08:45:57 +0800 Received: from MTKCAS32.mediatek.inc (172.27.4.184) by MTKMBS31N2.mediatek.inc (172.27.4.87) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Sun, 31 Mar 2019 08:45:56 +0800 Received: from [10.17.3.153] (172.27.4.253) by MTKCAS32.mediatek.inc (172.27.4.170) with Microsoft SMTP Server id 15.0.1395.4 via Frontend Transport; Sun, 31 Mar 2019 08:45:55 +0800 Message-ID: <1553993155.7748.2.camel@mhfsdcap03> Subject: Re: [PATCH] PCI: mediatek: get optional clock by devm_clk_get_optional() From: Honghui Zhang To: Chunfeng Yun CC: Ryder Lee , Lorenzo Pieralisi , Bjorn Helgaas , "Matthias Brugger" , , , , Date: Sun, 31 Mar 2019 08:45:55 +0800 In-Reply-To: <1553940051-10367-1-git-send-email-chunfeng.yun@mediatek.com> References: <1553940051-10367-1-git-send-email-chunfeng.yun@mediatek.com> Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.2.3-0ubuntu6 Content-Transfer-Encoding: 7bit MIME-Version: 1.0 X-MTK: N Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org On Sat, 2019-03-30 at 18:00 +0800, Chunfeng Yun wrote: > Use devm_clk_get_optional() to get optional clock > > Signed-off-by: Chunfeng Yun > --- > drivers/pci/controller/pcie-mediatek.c | 46 ++++++-------------------- > 1 file changed, 11 insertions(+), 35 deletions(-) > > diff --git a/drivers/pci/controller/pcie-mediatek.c b/drivers/pci/controller/pcie-mediatek.c > index 0b6c72804e03..9a66a018489b 100644 > --- a/drivers/pci/controller/pcie-mediatek.c > +++ b/drivers/pci/controller/pcie-mediatek.c > @@ -915,49 +915,25 @@ static int mtk_pcie_parse_port(struct mtk_pcie *pcie, > > /* sys_ck might be divided into the following parts in some chips */ > snprintf(name, sizeof(name), "ahb_ck%d", slot); > - port->ahb_ck = devm_clk_get(dev, name); > - if (IS_ERR(port->ahb_ck)) { > - if (PTR_ERR(port->ahb_ck) == -EPROBE_DEFER) > - return -EPROBE_DEFER; > - > - port->ahb_ck = NULL; > - } > + port->ahb_ck = devm_clk_get_optional(dev, name); > + if (IS_ERR(port->ahb_ck)) > + return PTR_ERR(port->ahb_ck); > > snprintf(name, sizeof(name), "axi_ck%d", slot); > - port->axi_ck = devm_clk_get(dev, name); > - if (IS_ERR(port->axi_ck)) { > - if (PTR_ERR(port->axi_ck) == -EPROBE_DEFER) > - return -EPROBE_DEFER; > - > - port->axi_ck = NULL; > - } > + port->axi_ck = devm_clk_get_optional(dev, name); > + return PTR_ERR(port->axi_ck); > > snprintf(name, sizeof(name), "aux_ck%d", slot); > - port->aux_ck = devm_clk_get(dev, name); > - if (IS_ERR(port->aux_ck)) { > - if (PTR_ERR(port->aux_ck) == -EPROBE_DEFER) > - return -EPROBE_DEFER; > - > - port->aux_ck = NULL; > - } > + port->aux_ck = devm_clk_get_optional(dev, name); > + return PTR_ERR(port->aux_ck); > > snprintf(name, sizeof(name), "obff_ck%d", slot); > - port->obff_ck = devm_clk_get(dev, name); > - if (IS_ERR(port->obff_ck)) { > - if (PTR_ERR(port->obff_ck) == -EPROBE_DEFER) > - return -EPROBE_DEFER; > - > - port->obff_ck = NULL; > - } > + port->obff_ck = devm_clk_get_optional(dev, name); > + return PTR_ERR(port->obff_ck); > > snprintf(name, sizeof(name), "pipe_ck%d", slot); > - port->pipe_ck = devm_clk_get(dev, name); > - if (IS_ERR(port->pipe_ck)) { > - if (PTR_ERR(port->pipe_ck) == -EPROBE_DEFER) > - return -EPROBE_DEFER; > - > - port->pipe_ck = NULL; > - } > + port->pipe_ck = devm_clk_get_optional(dev, name); > + return PTR_ERR(port->pipe_ck); > Hi, Chunfeng, Thanks for this patch, I had not noticed that the devm_clk_get_optional have been applied, I like this change. Acked-by: Honghui Zhang > snprintf(name, sizeof(name), "pcie-rst%d", slot); > port->reset = devm_reset_control_get_optional_exclusive(dev, name);