From: Lorenzo Pieralisi <lpieralisi@kernel.org>
To: Hongxing Zhu <hongxing.zhu@nxp.com>
Cc: Bjorn Helgaas <helgaas@kernel.org>,
Ahmad Fatoum <a.fatoum@pengutronix.de>,
"l.stach@pengutronix.de" <l.stach@pengutronix.de>,
"bhelgaas@google.com" <bhelgaas@google.com>,
"lorenzo.pieralisi@arm.com" <lorenzo.pieralisi@arm.com>,
"vkoul@kernel.org" <vkoul@kernel.org>,
Marcel Ziswiler <marcel.ziswiler@toradex.com>,
"kishon@ti.com" <kishon@ti.com>,
"linux-pci@vger.kernel.org" <linux-pci@vger.kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
dl-linux-imx <linux-imx@nxp.com>,
"kernel@pengutronix.de" <kernel@pengutronix.de>,
"linux-phy@lists.infradead.org" <linux-phy@lists.infradead.org>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>
Subject: Re: [PATCH v1 0/2] Fix the wrong order of phy callbacks
Date: Tue, 27 Sep 2022 12:40:38 +0200 [thread overview]
Message-ID: <YzLTJqzvv6BgraiL@lpieralisi> (raw)
In-Reply-To: <AS8PR04MB867644D39C15DDEF5CE88E008C789@AS8PR04MB8676.eurprd04.prod.outlook.com>
On Wed, Aug 31, 2022 at 01:37:02AM +0000, Hongxing Zhu wrote:
> > -----Original Message-----
> > From: Bjorn Helgaas <helgaas@kernel.org>
> > Sent: 2022年8月30日 23:06
> > To: Hongxing Zhu <hongxing.zhu@nxp.com>
> > Cc: Ahmad Fatoum <a.fatoum@pengutronix.de>; l.stach@pengutronix.de;
> > bhelgaas@google.com; lorenzo.pieralisi@arm.com; vkoul@kernel.org; Marcel
> > Ziswiler <marcel.ziswiler@toradex.com>; kishon@ti.com;
> > linux-pci@vger.kernel.org; linux-kernel@vger.kernel.org; dl-linux-imx
> > <linux-imx@nxp.com>; kernel@pengutronix.de; linux-phy@lists.infradead.org;
> > linux-arm-kernel@lists.infradead.org
> > Subject: Re: [PATCH v1 0/2] Fix the wrong order of phy callbacks
> >
> > On Tue, Aug 30, 2022 at 07:50:55AM +0000, Hongxing Zhu wrote:
> > > > -----Original Message-----
> > > > From: Ahmad Fatoum <a.fatoum@pengutronix.de>
> > > > Sent: 2022年8月30日 15:16
> > > > To: Hongxing Zhu <hongxing.zhu@nxp.com>; l.stach@pengutronix.de;
> > > > bhelgaas@google.com; lorenzo.pieralisi@arm.com; vkoul@kernel.org;
> > > > Marcel Ziswiler <marcel.ziswiler@toradex.com>; kishon@ti.com
> > > > Cc: linux-pci@vger.kernel.org; linux-kernel@vger.kernel.org;
> > > > dl-linux-imx <linux-imx@nxp.com>; kernel@pengutronix.de;
> > > > linux-phy@lists.infradead.org; linux-arm-kernel@lists.infradead.org
> > > > Subject: Re: [PATCH v1 0/2] Fix the wrong order of phy callbacks
> >
> > The above quoting style makes it harder than necessary to follow conversation.
> > See hints at:
> >
> >
> > https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fen.wiki
> > pedia.org%2Fwiki%2FPosting_style%23Interleaved_style&data=05%7C01
> > %7Chongxing.zhu%40nxp.com%7C70f38214c8f94c5932b408da8a991996%7C
> > 686ea1d3bc2b4c6fa92cd99c5c301635%7C0%7C0%7C637974687433589209
> > %7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLC
> > JBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=ceZmDd
> > sNeC9nU6qmt2qXR03fQn33vY%2FqvBIYzeWW7mk%3D&reserved=0
> >
> > https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fpeople.
> > kernel.org%2Ftglx%2Fnotes-about-netiquette&data=05%7C01%7Chongxi
> > ng.zhu%40nxp.com%7C70f38214c8f94c5932b408da8a991996%7C686ea1d3b
> > c2b4c6fa92cd99c5c301635%7C0%7C0%7C637974687433589209%7CUnkno
> > wn%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1ha
> > WwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=PkhpGGf7FcvsQTjc0
> > hUMpr9Q4JVKeFoLR4foA6zt6jg%3D&reserved=0
> >
> > The ideal thing would be something like this, where there's a single line for
> > each sender:
> >
> > On Tue, Aug 30, 2022 at 07:50:55AM +0000, Hongxing Zhu wrote:
> > > On Tue, Aug 30, 2022, at 03:16PM, Ahmad Fatoum wrote:
> > > > On 30.08.22 05:47, Hongxing Zhu wrote:
> > > > > Do you mean to squash this fix to the preview series?
> > > > > I'm afraid that it's not easy to do that.
> > > > > Because there are a lot of pci-imx6 code changes after
> > > > > commit: 1aa97b002258 ("phy: freescale: pcie: Initialize the imx8
> > > > > pcie standalone phy driver").
> > > >
> > > > The way I understand it, if a bisect ends up between your two
> > > > patches, i.MX8M PCIe will be broken, whereas it worked before. I
> > > > thus wonder if we shouldn't instead squash this series here into a
> > > > single patch.
> > >
> > > Yes, it's a possible case when do the bisect.
> > > Since these changes are belong to different git repo.
> >
> > I don't understand the point about different git repos. Patch 1/2 touches
> > drivers/pci/controller/dwc/pci-imx6.c, patch 2/2 touches
> > drivers/phy/freescale/phy-fsl-imx8m-pcie.c. They're in different directories,
> > of course, but are in the same Linux kernel source repo.
> >
> > They're maintained by different people, but we can easily deal with that by
> > getting an ack from one and merging via the other.
> >
> > > It will bring maintain difficulties if these two patches are squashed
> > > into a single one.
> > > It's difficult to make a choice.
> >
> > What maintenance difficulty do you see here? I think it looks
> > *easier* if these are squashed -- that would avoid the possibility of backporting
> > one without the other, which would certainly be a problem.
> >
> > If a bisect lands after patch 1/2 but before 2/2, it looks like i.MX8M will break
> > unnecessarily.
> >
> > I think Ahmad is right that patches 1/2 and 2/2 should be squashed into a
> > single patch to avoid this bisection hole.
> Hi Bjorn:
> Thanks for your comments.
> My descriptions are not accurate enough. These two files are maintained by
> different people, I'm afraid to bring troubles to the maintainers if
> I squash these two patch into a single one before.
> Now, I understood the situation.
> I'm glad to squash them to avoid the bisetion hole.
Are you sending an updated patch ?
Thanks,
Lorenzo
next prev parent reply other threads:[~2022-09-27 10:40 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-08-22 13:10 [PATCH v1 0/2] Fix the wrong order of phy callbacks Richard Zhu
2022-08-22 13:10 ` [PATCH v1 1/2] PCI: imx6: Fix the wrong order of phy_init() and phy_power_on() Richard Zhu
2022-08-22 13:10 ` [PATCH v1 2/2] phy: freescale: imx8m-pcie: " Richard Zhu
2022-08-26 6:26 ` [PATCH v1 0/2] Fix the wrong order of phy callbacks Alexander Stein
2022-08-26 6:56 ` Hongxing Zhu
2022-08-29 6:33 ` Ahmad Fatoum
2022-08-30 3:47 ` Hongxing Zhu
2022-08-30 7:15 ` Ahmad Fatoum
2022-08-30 7:50 ` Hongxing Zhu
2022-08-30 15:05 ` Bjorn Helgaas
2022-08-31 1:37 ` Hongxing Zhu
2022-09-27 10:40 ` Lorenzo Pieralisi [this message]
2022-09-29 0:51 ` Hongxing Zhu
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