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From: "Krzysztof Wilczyński" <kw@linux.com>
To: Vidya Sagar <vidyas@nvidia.com>
Cc: Bjorn Helgaas <helgaas@kernel.org>,
	lpieralisi@kernel.org, robh@kernel.org, bhelgaas@google.com,
	thierry.reding@gmail.com, jonathanh@nvidia.com,
	Sergey.Semin@baikalelectronics.ru, linux-pci@vger.kernel.org,
	linux-tegra@vger.kernel.org, linux-kernel@vger.kernel.org,
	kthota@nvidia.com, mmaddireddy@nvidia.com, sagar.tv@gmail.com
Subject: Re: [PATCH V4] Revert "PCI: tegra194: Enable support for 256 Byte payload"
Date: Fri, 4 Aug 2023 03:50:31 +0900	[thread overview]
Message-ID: <20230803185031.GA3849329@rocinante> (raw)
In-Reply-To: <55e8a27b-580f-8b33-f069-a05cc5322cbb@nvidia.com>

Hello!

[...]
> > > After commit 4fb8e46c1bc4 ("PCI: tegra194: Enable support for 256 Byte
> > > payload"), we set MPS=256 for tegra194 Root Ports.
> > > 
> > > By default (CONFIG_PCIE_BUS_DEFAULT set and no "pci=pcie_bus_*"
> > > parameter), Linux configures the MPS of every device to match the
> > > upstream bridge, which is impossible if the Root Port has MPS=256
> > > and a device only supports MPS=128.
> > 
> > Thanks for pointing out that I broke this log by omitting the mention
> > of a switch.  Is the rewording below better?  If so, Krzysztof can
> > amend the commit.
> Yes. The below rewording looks good.

Updated commit at:

  https://git.kernel.org/pci/pci/c/ebfde1584d9f

Thank you everyone!

	Krzysztof

  reply	other threads:[~2023-08-03 18:51 UTC|newest]

Thread overview: 25+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-06-08  9:36 [PATCH V1] Revert "PCI: tegra194: Enable support for 256 Byte payload" Vidya Sagar
2023-06-08 16:33 ` Bjorn Helgaas
2023-06-09  2:23   ` Vidya Sagar
2023-06-14 10:39     ` Jon Hunter
2023-06-19  1:42 ` [PATCH V2] " Vidya Sagar
2023-06-19  3:42   ` kernel test robot
2023-06-19 10:26   ` [PATCH V3] " Vidya Sagar
2023-06-27 10:48     ` Krzysztof Wilczyński
2023-07-13 21:39     ` Bjorn Helgaas
2023-07-18  2:33       ` Vidya Sagar
2023-07-18 11:09         ` Bjorn Helgaas
2023-07-19 11:01           ` Vidya Sagar
2023-07-19 14:57             ` Bjorn Helgaas
2023-07-18  2:52     ` [PATCH V4] " Vidya Sagar
2023-07-21  8:23       ` Jon Hunter
2023-07-21 10:35         ` Bjorn Helgaas
2023-07-28 12:44           ` Jon Hunter
2023-08-01 20:40       ` Bjorn Helgaas
2023-08-03  9:19         ` Vidya Sagar
2023-08-03 18:50           ` Krzysztof Wilczyński [this message]
2023-07-25  7:51 ` [PATCH V1] " Manivannan Sadhasivam
2023-07-25  8:19   ` Vidya Sagar
2023-07-25  8:30     ` Manivannan Sadhasivam
2023-07-25  9:21       ` Vidya Sagar
2023-07-25 10:03         ` Manivannan Sadhasivam

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