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Niklas Cassel fdf5e16605 PCI: dw-rockchip: Don't wait for link since we can detect Link Up
[ Upstream commit ec9fd499b9 ]

The Root Complex specific device tree binding for pcie-dw-rockchip has the
'sys' interrupt marked as required.

The driver requests the 'sys' IRQ unconditionally, and errors out if not
provided.

Thus, we can unconditionally set 'use_linkup_irq', so dw_pcie_host_init()
doesn't wait for the link to come up.

This will skip the wait for link up (since the bus will be enumerated once
the link up IRQ is triggered), which reduces the bootup time.

Link: https://lore.kernel.org/r/20250113-rockchip-no-wait-v1-1-25417f37b92f@kernel.org
Signed-off-by: Niklas Cassel <cassel@kernel.org>
[bhelgaas: commit log]
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>
Stable-dep-of: fc6298086b ("Revert "PCI: dw-rockchip: Don't wait for link since we can detect Link Up"")
Signed-off-by: Sasha Levin <sashal@kernel.org>
History 2026-03-13 17:20:21 +01:00
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Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the reStructuredText markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.