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[ Upstream commitef9e4005cb] After34e3207205("PCI: handle positive error codes"), pci_user_read_config_*() and pci_user_write_config_*() return 0 or negative errno values, not PCIBIOS_* values like PCIBIOS_SUCCESSFUL or PCIBIOS_BAD_REGISTER_NUMBER. Remove comparisons with PCIBIOS_SUCCESSFUL and check only for non-zero. It happens that PCIBIOS_SUCCESSFUL is zero, so this is not a functional change, but it aligns this code with the user accessors. [bhelgaas: commit log] Fixes:34e3207205("PCI: handle positive error codes") Link: https://lore.kernel.org/r/f1220314-e518-1e18-bf94-8e6f8c703758@gmail.com Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Signed-off-by: Sasha Levin <sashal@kernel.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.