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Tue, 2 Apr 2019 14:54:59 +0800 Message-ID: <1554188098.2219.0.camel@mtkswgap22> Subject: Re: [v2 PATCH] PCI: mediatek: get optional clock by devm_clk_get_optional() From: Ryder Lee To: Chunfeng Yun Date: Tue, 2 Apr 2019 14:54:58 +0800 In-Reply-To: <1554036063-1381-1-git-send-email-chunfeng.yun@mediatek.com> References: <1554036063-1381-1-git-send-email-chunfeng.yun@mediatek.com> X-Mailer: Evolution 3.2.3-0ubuntu6 MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190401_235511_245226_E1891EBE X-CRM114-Status: GOOD ( 13.79 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Lorenzo Pieralisi , linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, Matthias Brugger , linux-mediatek@lists.infradead.org, Honghui Zhang , Bjorn Helgaas , linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Sun, 2019-03-31 at 20:41 +0800, Chunfeng Yun wrote: > Use devm_clk_get_optional() to get optional clock > > Cc: Ryder Lee > Cc: Honghui Zhang > Signed-off-by: Chunfeng Yun Acked-by: Ryder Lee > --- > v2: > 1. cc Ryder and Honghui > 2. fix up omitted 'if (IS_ERR())' > --- > drivers/pci/controller/pcie-mediatek.c | 50 ++++++++------------------ > 1 file changed, 15 insertions(+), 35 deletions(-) > > diff --git a/drivers/pci/controller/pcie-mediatek.c b/drivers/pci/controller/pcie-mediatek.c > index 0b6c72804e03..adb6cb15daa2 100644 > --- a/drivers/pci/controller/pcie-mediatek.c > +++ b/drivers/pci/controller/pcie-mediatek.c > @@ -915,49 +915,29 @@ 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); > + if (IS_ERR(port->axi_ck)) > + 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); > + if (IS_ERR(port->aux_ck)) > + 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); > + if (IS_ERR(port->obff_ck)) > + 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); > + if (IS_ERR(port->pipe_ck)) > + return PTR_ERR(port->pipe_ck); > > snprintf(name, sizeof(name), "pcie-rst%d", slot); > port->reset = devm_reset_control_get_optional_exclusive(dev, name); _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel