Re: [PATCH] PCI: vmd: Free up IRQs on suspend path

[Greg KH <gregkh@linuxfoundation.org>]

On Wed, Feb 06, 2019 at 02:36:16PM -0700, Sushma Kalakota wrote:
> commit e2b1820bd5d09 upstream
> 
> Free up the IRQs we request on the suspend path and reallocate them on the
> resume path.
> 
> Fixes this error:
> 
>   CPU 111 disable failed: CPU has 9 vectors assigned and there are only 0 available.
>   Error taking CPU111 down: -34
>   Non-boot CPUs are not disabled
>   Enabling non-boot CPUs ...
> 
> For consistency, this patch also includes the VMD portion of:
> 3eefa790c9681: PCI: host: Mark PCIe/PCI (MSI) cascade ISR as IRQF_NO_THREAD
> 
> CC: Scott Bauer <scott.bauer@intel.com>
> CC: Bjorn Helgaas <bhelgaas@google.com>
> CC: Keith Busch <keith.busch@intel.com>
> Reviewed-by: Jon Derrick <jonathan.derrick@intel.com>
> Signed-off-by: Sushma Kalakota <sushmax.kalakota@intel.com>
> ---
>  drivers/pci/host/vmd.c | 18 +++++++++++++++++-
>  1 file changed, 17 insertions(+), 1 deletion(-)
> 

What stable kernel tree(s) do you want this patch applied to?  And why?

thanks,

greg k-h