Re: [PATCH v2] PCI: Fix "try" semantics of bus and slot reset

[Sinan Kaya]

On 2/18/2019 2:46 PM, Alex Williamson wrote:
> The commit referenced below introduced device locking around save and
> restore of state for each device during a PCI bus "try" reset, making
> it decidely non-"try" and prone to deadlock in the event that a device
> is already locked.  Restore __pci_reset_bus() and __pci_reset_slot()
> to their advertised locking semantics by pushing the save and restore
> functions into the branch where the entire tree is already locked.
> Extend the helper function names with "_locked" and update the comment
> to reflect this calling requirement.
>
> Fixes: b014e96d1abb ("PCI: Protect pci_error_handlers->reset_notify() usage with device_lock()")
> Signed-off-by: Alex Williamson <alex.williamson@xxxxxxxxxx>
> ---

Reviewed-by: Sinan Kaya <okaya@xxxxxxxxxx>