From: "Krzysztof Wilczyński" <kw@linux.com>
To: Jianjun Wang <jianjun.wang@mediatek.com>
Cc: Bjorn Helgaas <helgaas@kernel.org>,
Rob Herring <robh+dt@kernel.org>,
maz@kernel.org, Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>,
Ryder Lee <ryder.lee@mediatek.com>,
Philipp Zabel <p.zabel@pengutronix.de>,
Matthias Brugger <matthias.bgg@gmail.com>,
linux-pci@vger.kernel.org, linux-mediatek@lists.infradead.org,
devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
Sj Huang <sj.huang@mediatek.com>,
youlin.pei@mediatek.com, chuanjia.liu@mediatek.com,
qizhong.cheng@mediatek.com, sin_jieyang@mediatek.com,
drinkcat@chromium.org, Rex-BC.Chen@mediatek.com,
anson.chuang@mediatek.com
Subject: Re: [v8,6/7] PCI: mediatek-gen3: Add system PM support
Date: Wed, 24 Feb 2021 15:10:13 +0100 [thread overview]
Message-ID: <YDZeRc6CHV/WzyCm@rocinante> (raw)
In-Reply-To: <20210224061132.26526-7-jianjun.wang@mediatek.com>
Hi Jianjun,
> Add suspend_noirq and resume_noirq callback functions to implement
> PM system suspend hooks for MediaTek Gen3 PCIe controller.
So, "systems suspend" and "resume" hooks, correct?
> When system suspend, trigger the PCIe link to L2 state and pull down
It probably would be "the system suspends".
[...]
> When system resum, the PCIe link should be re-established and the
> related control register values should be restored.
Similarly to the above: "the system resumes".
[...]
> + if (err) {
> + dev_err(port->dev, "can not enter L2 state\n");
> + return err;
> + }
Most likely you want "cannot" or "can't" in the above error message.
> + /* Pull down the PERST# pin */
> + val = readl_relaxed(port->base + PCIE_RST_CTRL_REG);
> + val |= PCIE_PE_RSTB;
> + writel_relaxed(val, port->base + PCIE_RST_CTRL_REG);
> +
> + dev_dbg(port->dev, "enter L2 state success");
Just a nitpick. What about "entered L2 states successfully"?
[...]
> + if (err) {
> + dev_err(port->dev, "resume failed\n");
> + return err;
> + }
This error message does not quite convey that the mtk_pcie_startup_port()
was the function that failed, which is only a part of what you have to do
to successfully resume.
> + dev_dbg(port->dev, "resume done\n");
A nitpick. Probably not needed, as lack of error message would mean
that the device resumed successfully after being suspended.
Krzysztof
next prev parent reply other threads:[~2021-02-24 15:06 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-24 6:11 [v8,0/7] PCI: mediatek: Add new generation controller support Jianjun Wang
2021-02-24 6:11 ` [v8,1/7] dt-bindings: PCI: mediatek-gen3: Add YAML schema Jianjun Wang
2021-03-06 20:09 ` Rob Herring
2021-02-24 6:11 ` [v8,2/7] PCI: Export pci_pio_to_address() for module use Jianjun Wang
2021-02-24 6:11 ` [v8,3/7] PCI: mediatek-gen3: Add MediaTek Gen3 driver for MT8192 Jianjun Wang
2021-02-24 13:36 ` Krzysztof Wilczyński
2021-02-25 3:07 ` Jianjun Wang
2021-03-11 12:38 ` Pali Rohár
2021-03-13 7:43 ` Jianjun Wang
2021-03-18 0:02 ` Pali Rohár
2021-03-18 5:48 ` Jianjun Wang
2021-03-19 18:53 ` Pali Rohár
2021-03-23 1:31 ` Jianjun Wang
2021-03-23 14:51 ` Pali Rohár
2021-03-29 22:58 ` Pali Rohár
2021-02-24 6:11 ` [v8,4/7] PCI: mediatek-gen3: Add INTx support Jianjun Wang
2021-02-24 14:24 ` Krzysztof Wilczyński
2021-02-25 3:10 ` Jianjun Wang
2021-03-09 11:10 ` Marc Zyngier
2021-03-10 3:05 ` Jianjun Wang
2021-02-24 6:11 ` [v8,5/7] PCI: mediatek-gen3: Add MSI support Jianjun Wang
2021-02-24 14:31 ` Krzysztof Wilczyński
2021-02-25 3:09 ` Jianjun Wang
2021-03-09 11:23 ` Marc Zyngier
2021-03-10 6:48 ` Jianjun Wang
[not found] ` <87a6rbxs4w.wl-maz@kernel.org>
2021-03-11 9:47 ` Jianjun Wang
2021-03-11 0:05 ` Pali Rohár
2021-03-11 8:19 ` Marc Zyngier
2021-03-11 9:50 ` Jianjun Wang
2021-02-24 6:11 ` [v8,6/7] PCI: mediatek-gen3: Add system PM support Jianjun Wang
2021-02-24 14:10 ` Krzysztof Wilczyński [this message]
2021-02-25 3:34 ` Jianjun Wang
2021-02-25 22:00 ` Krzysztof Wilczyński
2021-02-26 10:06 ` Jianjun Wang
2021-02-24 6:11 ` [v8,7/7] MAINTAINERS: Add Jianjun Wang as MediaTek PCI co-maintainer Jianjun Wang
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