From: sashiko-bot@kernel.org
To: "Sasha Levin" <sashal@kernel.org>
Cc: linux-pci@vger.kernel.org
Subject: Re: [PATCH AUTOSEL 6.18-5.10] PCI/portdrv: Allow probing even without child services
Date: Mon, 19 Oct 2026 14:40:27 +0000 [thread overview]
Message-ID: <sashiko-outbox-177469@kernel.org> (raw)
In-Reply-To: <20261019135441.1420968-203-sashal@kernel.org>
> From: Brian Norris <briannorris@chromium.org>
>
> [ Upstream commit 834171efeefffb1a0f2136f32e76669bbc11db86 ]
>
> The PCIe port driver fails to probe if it finds no child services,
> presumably under the assumption that the driver is not useful in that case.
> However, the driver *can* still be useful for power management support --
> namely, it still configures the port for runtime PM / D3, which may be
> important for allowing a bridge to enter low power modes.
>
> Thus, allow probe to succeed even if no IRQs and no child services are
> available. This also mirrors existing behavior for ports that don't support
> any portdrv services (PCIe hotplug, AER, DPC, PME, bwctrl), where we'd also
> probe successfully.
>
> [ ... ]
> [bhelgaas: reorder pcie_port_device_register() decls per Lukas]
> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
> Reviewed-by: Lukas Wunner <lukas@wunner.de>
> Link: https://patch.msgid.link/20260722160942.v4.1.I5fd5d83f518681b3949d8ab2f16ba8244fd3e774@changeid
> Signed-off-by: Sasha Levin <sashal@kernel.org>
Sashiko has reviewed this patch and found no issues.
--
Sashiko AI review · https://sashiko.dev/#/patchset/20261019135441.1420968-203-sashal@kernel.org?part=1
next prev parent reply other threads:[~2026-10-19 14:40 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20261019135441.1420968-1-sashal@kernel.org>
2026-10-19 13:45 ` [PATCH AUTOSEL 6.18-6.1] PCI: switchtec: Add Microchip PCI1008 to NTB DMA alias quirk Sasha Levin
2026-10-19 14:06 ` sashiko-bot
2026-10-19 13:46 ` [PATCH AUTOSEL 6.18-5.10] PCI: cadence: Add missing MODULE_DEVICE_TABLE() Sasha Levin
2026-10-19 14:19 ` sashiko-bot
2026-10-19 13:46 ` [PATCH AUTOSEL 6.18-6.1] PCI: switchtec: Add Microchip PCI1008 device ID Sasha Levin
2026-10-19 14:14 ` sashiko-bot
2026-10-19 13:46 ` [PATCH AUTOSEL 6.18] PCI: vmd: Add Nova Lake (NVL) and Dunlow (DNL) Device IDs Sasha Levin
2026-10-19 14:20 ` sashiko-bot
2026-10-19 13:48 ` [PATCH AUTOSEL 6.18-6.1] PCI: Avoid saving config space state if inaccessible Sasha Levin
2026-10-19 14:41 ` sashiko-bot
2026-10-19 13:48 ` [PATCH AUTOSEL 6.18-5.10] PCI/portdrv: Allow probing even without child services Sasha Levin
2026-10-19 14:40 ` sashiko-bot [this message]
2026-10-19 13:49 ` [PATCH AUTOSEL 6.18-5.10] PCI: vmd: Handle BUS_RESTRICT_CFG value 3 for Arrow Lake-HX Sasha Levin
2026-10-19 14:50 ` sashiko-bot
2026-10-19 13:52 ` [PATCH AUTOSEL 6.18-5.10] PCI/ATS: Ensure pci_ats_supported() is PF-aware for VFs Sasha Levin
2026-10-19 15:18 ` sashiko-bot
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