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5a9b7bfb0d
There was a problem with resuming ping after conducting a PCI reset. This commit adds two functions, igbvf_io_prepare and igbvf_io_done, which, after being added to the pci_error_handlers struct, will prepare the drivers for a PCI reset and then bring the interface up and reset it after. This will prevent the driver from ending up in incorrect state. Test_and_set_bit is highly reliable in this context, so we are not including a timeout in this commit This introduces 900ms - 1100ms of overhead to this operation but it's in non-time-critical flow. And also allows the driver to continue functioning after the reset. Functionality documented in ethernet-controller-i350-datasheet 4.2.1.3 https://www.intel.com/content/www/us/en/products/details/ethernet/gigabit-controllers/i350-controllers/docs.html Signed-off-by: Dawid Wesierski <dawidx.wesierski@intel.com> Signed-off-by: Kamil Maziarz <kamil.maziarz@intel.com> Reviewed-by: Michal Kubiak <michal.kubiak@intel.com> Tested-by: Marek Szlosek <marek.szlosek@intel.com> Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.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.