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When we reset PCI devices managed by a hotplug driver the reset may generate spurious hotplug events that cause the PCI device we're resetting to be torn down accidently. This is a problem for EEH (when the driver is EEH aware) since we want to leave the OS PCI device state intact so that the device can be re-set without losing any resources (network, disks, etc) provided by the driver. Generic PCI code provides the pci_bus_error_reset() function to handle resetting a PCI Device (or bus) by using the reset method provided by the hotplug slot driver. We can use this function if the EEH core has requested a hot reset (common case) without tripping over the hotplug driver. Signed-off-by: Oliver O'Halloran <oohall@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20190903101605.2890-8-oohall@gmail.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.