From: Bjorn Helgaas <helgaas@kernel.org>
To: Vidya Sagar <vidyas@nvidia.com>
Cc: bhelgaas@google.com, sathyanarayanan.kuppuswamy@linux.intel.com,
rafael.j.wysocki@intel.com, kai.heng.feng@canonical.com,
linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org,
treding@nvidia.com, jonathanh@nvidia.com, kthota@nvidia.com,
mmaddireddy@nvidia.com, sagar.tv@gmail.com
Subject: Re: [PATCH V1] PCI/ASPM: Update saved buffers with latest ASPM configuration
Date: Fri, 27 Jan 2023 14:10:01 -0600 [thread overview]
Message-ID: <20230127201001.GA1412182@bhelgaas> (raw)
In-Reply-To: <20230125133830.20620-1-vidyas@nvidia.com>
On Wed, Jan 25, 2023 at 07:08:30PM +0530, Vidya Sagar wrote:
> Many PCIe device drivers save the configuration state of their respective
> devices during probe and restore the same when their 'slot_reset' hook
> is called through PCIe Error Recovery System.
> If the system has a change in ASPM policy after the driver's probe is
> called and before error event occurred, 'slot_reset' hook restores the
> PCIe configuration state to what it was at the time of probe but not with
> what it was just before the occurrence of the error event.
> This effectively leads to a mismatch in the ASPM configuration between
> the device and its upstream parent device.
> This patch addresses that issue by updating the saved configuration state
> of the device with the latest info whenever there is a change w.r.t ASPM
> policy.
Please use blank lines between paragraphs. Inferring "new paragraph"
from "last line was shorter than usual" is error-prone and hard to
read.
Omit "this patch" (that part is obvious) and use imperative mood:
https://chris.beams.io/posts/git-commit/
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/Documentation/process/submitting-patches.rst?id=v6.0#n94
next prev parent reply other threads:[~2023-01-27 20:11 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-01-25 13:38 [PATCH V1] PCI/ASPM: Update saved buffers with latest ASPM configuration Vidya Sagar
2023-01-25 15:01 ` Wysocki, Rafael J
2023-01-25 17:22 ` Vidya Sagar
2023-01-26 11:43 ` Wysocki, Rafael J
2023-01-26 21:22 ` Sathyanarayanan Kuppuswamy
2023-01-27 20:10 ` Bjorn Helgaas [this message]
2023-01-28 18:26 ` Bjorn Helgaas
2024-01-03 10:35 ` [PATCH V2] PCI/ASPM: Update saved buffers with latest ASPM Vidya Sagar
2024-01-03 15:37 ` Kuppuswamy Sathyanarayanan
2024-01-08 12:42 ` [PATCH V3] " Vidya Sagar
2024-02-20 4:07 ` Vidya Sagar
2024-02-20 17:23 ` Bjorn Helgaas
2024-02-22 17:44 ` [PATCH V4] " Vidya Sagar
2024-02-22 18:20 ` Kuppuswamy Sathyanarayanan
2024-02-22 18:54 ` Bjorn Helgaas
2024-02-22 19:54 ` Kuppuswamy Sathyanarayanan
2024-02-22 22:14 ` David E. Box
2024-02-22 20:59 ` Vidya Sagar
2024-03-05 22:03 ` Bjorn Helgaas
2024-03-05 22:35 ` Kuppuswamy Sathyanarayanan
2024-03-06 1:37 ` David E. Box
2024-03-07 22:01 ` Bjorn Helgaas
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