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[ Upstream commitf83c37941e] Pericom PCIe-USB adapter advertises MSI, but documentation says "The MSI Function is not implemented on this device" in chapters 7.3.27, 7.3.29-7.3.31, and Alberto found that MSI in fact does not work. Disable MSI for these devices. Datasheet: https://www.diodes.com/assets/Datasheets/PI7C9X440SL.pdf Fixes:306c54d0ed("usb: hcd: Try MSI interrupts on PCI devices") Link: https://lore.kernel.org/linux-usb/20201030134826.GP4077@smile.fi.intel.com/ Link: https://lore.kernel.org/r/20201106100526.17726-1-andriy.shevchenko@linux.intel.com Reported-by: alberto.vignani@fastwebnet.it Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.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.