[Resend PATCH 2/2 v3] pci-hyperv: lock pci bus on device eject

[Long Li]

Ok, I will resend.

> -----Original Message-----
> From: Greg KH [mailto:greg at kroah.com]
> Sent: Saturday, February 25, 2017 12:02 AM
> To: Long Li <longli at microsoft.com>
> Cc: KY Srinivasan <kys at microsoft.com>; Haiyang Zhang
> <haiyangz at microsoft.com>; Bjorn Helgaas <bhelgaas at google.com>;
> devel at linuxdriverproject.org; linux-kernel at vger.kernel.org; linux-
> pci at vger.kernel.org
> Subject: Re: [Resend PATCH 2/2 v3] pci-hyperv: lock pci bus on device eject
> 
> On Fri, Feb 24, 2017 at 09:49:17PM +0000, Long Li wrote:
> > A PCI_EJECT message can arrive at the same time we are calling
> pci_scan_child_bus in the workqueue for the previous PCI_BUS_RELATIONS
> message or in create_root_hv_pci_bus(), in this case we could potentailly
> modify the bus from multiple places. Properly lock the bus access.
> 
> Properly wrap your changelog comments at 72 columns like your editor is
> telling you to do...