From: Bjorn Helgaas <helgaas@kernel.org>
To: linux-pci@vger.kernel.org
Cc: "Rafael J . Wysocki" <rafael@kernel.org>,
Lukas Wunner <lukas@wunner.de>,
Marco Nenciarini <mnencia@kcore.it>,
Michal Winiarski <michal.winiarski@intel.com>,
Ilpo Jarvinen <ilpo.jarvinen@linux.intel.com>,
Eric Chanudet <echanude@redhat.com>,
Jean Guyader <jean.guyader@gmail.com>,
Alex Williamson <alex@shazbot.org>, Sinan Kaya <okaya@kernel.org>,
Mario Limonciello <superm1@kernel.org>,
Mika Westerberg <mika.westerberg@linux.intel.com>,
linux-kernel@vger.kernel.org, Bjorn Helgaas <bhelgaas@google.com>
Subject: Re: [PATCH v2 0/2] Wait for device readiness after D3hot -> D0uninitialized transition
Date: Fri, 22 May 2026 17:30:06 -0500 [thread overview]
Message-ID: <20260522223006.GA253892@bhelgaas> (raw)
In-Reply-To: <20260518191220.636213-1-bhelgaas@google.com>
On Mon, May 18, 2026 at 02:12:17PM -0500, Bjorn Helgaas wrote:
> In pci_power_up(), wait for device to become ready after a soft reset
> (D3hot->D0uninitialized transition). We already wait 10 ms, but even after
> that, the device is permitted to respond to config requests with Request
> Retry Status (RRS) completion status. Use pci_dev_wait() to wait for
> successful completion.
>
> Bjorn Helgaas (2):
> PCI: Log device readiness timeouts as errors
> PCI: Wait for device readiness after D3hot -> D0uninitialized
> transition
>
> drivers/pci/pci.c | 28 ++++++++++++++++++++++++----
> 1 file changed, 24 insertions(+), 4 deletions(-)
>
>
> Changes since v1:
> - Log device readiness timeouts as errors, not warnings
> - On timeout, set dev->current_state to D3cold and return -EIO
>
> v1: https://lore.kernel.org/all/20260514153124.404060-1-bhelgaas@google.com/
I applied these to pci/reset for v7.2.
prev parent reply other threads:[~2026-05-22 22:30 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-05-18 19:12 Bjorn Helgaas
2026-05-18 19:12 ` [PATCH v2 1/2] PCI: Log device readiness timeouts as errors Bjorn Helgaas
2026-05-18 19:12 ` [PATCH v2 2/2] PCI: Wait for device readiness after D3hot -> D0uninitialized transition Bjorn Helgaas
2026-05-18 19:38 ` Rafael J. Wysocki
2026-05-18 19:45 ` Lukas Wunner
2026-05-18 19:47 ` Rafael J. Wysocki
2026-05-18 19:48 ` [PATCH v2 0/2] " Rafael J. Wysocki
2026-05-22 22:30 ` Bjorn Helgaas [this message]
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