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The PCIe Bandwidth Controller performs RMW accesses the Link Control 2
Register which can occur concurrently to other sources of Link Control 2
Register writes. Therefore, add Link Control 2 Register among the PCI
Express Capability Registers that need RMW locking.
Link: https://lore.kernel.org/r/20241018144755.7875-3-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: Lukas Wunner <lukas@wunner.de>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Extract the list of RMW protected PCIe Capability registers into a
bullet list to make them easier to pick up on a glance. An upcoming
change is going to add one more register among them so it will be much
cleaner to have them as bullets.
Link: https://lore.kernel.org/r/20241018144755.7875-2-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: Lukas Wunner <lukas@wunner.de>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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While 'x' and '&x[0]' are equivalent, most of the PCI drivers use the
former form for the .id_table.
Update some drivers and documentation for consistency.
Link: https://lore.kernel.org/r/20240517120458.1260489-1-masahiroy@kernel.org
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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Documentation claims port service drivers should play nice with respect to
PCIe Capability changes, but the concurrency control is now provided in the
Capability accessors as long as the correct ones are used.
Update the documention to match the RMW accessor behavior.
Link: https://lore.kernel.org/r/20230717120503.15276-12-ilpo.jarvinen@linux.intel.com
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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2e6422444894 ("Documentation: PCI: convert PCIEBUS-HOWTO.txt to reST")
incorrectly renamed PCIEBUS-HOWTO.txt to picebus-howto.rst.
Rename it to pciebus-howto.rst.
Fixes: 2e6422444894 ("Documentation: PCI: convert PCIEBUS-HOWTO.txt to reST")
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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