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5e69a33c5c
When a device is already unplugged by pciehp by the time the AER handler is invoked, the PCIe device will already be in the pci_channel_io_perm_failure state. In that case simply return PCI_ERS_RESULT_DISCONNECT instead of trying to do a state transition that will fail. Also untangle the state transition failure from the lack of methods to improve the debugging output in case it happens again. Link: https://lore.kernel.org/r/20220601074024.3481035-1-hch@lst.de Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.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.