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The PCI bus domain number (used in the iort_match_node_callback() - pci_domain_nr() call) is cascaded through the PCI bus hierarchy at PCI bus enumeration time, therefore there is no need in iort_find_dev_node() to walk the PCI bus upwards to grab the root bus to be passed to iort_scan_node(), the device->bus PCI bus pointer will do. Remove this useless code. Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Cc: Will Deacon <will@kernel.org> Cc: Hanjun Guo <guohanjun@huawei.com> Cc: Sudeep Holla <sudeep.holla@arm.com> Cc: Robin Murphy <robin.murphy@arm.com> Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net> Link: https://lore.kernel.org/r/20200619082013.13661-5-lorenzo.pieralisi@arm.com Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
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.