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The Target Speed quirk in pcie_failed_link_retrain() uses the presence of LBMS bit as one of the triggering conditions, effectively monopolizing the use of that bit. An upcoming change will introduce a PCIe bandwidth controller which sets up an interrupt to track LBMS. As LBMS will be cleared by the interrupt handler, the Target Speed quirk will no longer be able to observe LBMS directly. As a preparatory step for the change, extract the LBMS seen check from pcie_failed_link_retrain() into a new function pcie_lmbs_seen(). Link: https://lore.kernel.org/r/20241018144755.7875-6-ilpo.jarvinen@linux.intel.com Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> |
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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.