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"priv->ext_config_dev_aspm" was never set to a non-zero value. Therefore, alcor_pci_aspm_ctrl(priv, 1) did nothing, and alcor_pci_aspm_ctrl(priv, 0) always disabled ASPM in the device and the upstream bridge. The driver disabled ASPM in alcor_pci_probe() and alcor_resume(), so it's possible the device doesn't work well when ASPM is enabled. Remove all the ASPM-related code and replace the alcor_pci_aspm_ctrl(0) calls with pci_disable_link_state(pdev, PCIE_LINK_STATE_L0S | PCIE_LINK_STATE_L1), which asks the PCI core to disable ASPM. Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Cc: Oleksij Rempel <o.rempel@pengutronix.de> Reviewed-by: Oleksij Rempel <o.rempel@pengutronix.de> Link: https://lore.kernel.org/r/20230307213816.886308-1-helgaas@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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 Restructured Text 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.