RE: [PATCH v3 2/6] PCI: hv: hv_eject_device_work(): remove the bogus test

Michael Kelley (EOSG)
2018-03-06T18:29:33Z

> -----Original Message-----
> From: Dexuan Cui
> Sent: Tuesday, March 6, 2018 10:22 AM
> To: bhelgaas@google.com; linux-pci@vger.kernel.org; KY Srinivasan <kys@microsoft.com>;
> Stephen Hemminger <sthemmin@microsoft.com>; olaf@aepfle.de; apw@canonical.com;
> jasowang@redhat.com
> Cc: linux-kernel@vger.kernel.org; driverdev-devel@linuxdriverproject.org; Haiyang Zhang
> <haiyangz@microsoft.com>; vkuznets@redhat.com; marcelo.cerri@canonical.com; Michael
> Kelley (EOSG) <Michael.H.Kelley@microsoft.com>; Dexuan Cui <decui@microsoft.com>; Jack
> Morgenstein <jackm@mellanox.com>; stable@vger.kernel.org
> Subject: [PATCH v3 2/6] PCI: hv: hv_eject_device_work(): remove the bogus test
>
> When we're in the function, hpdev->state must be hv_pcichild_ejecting:
> see hv_pci_eject_device().
>
> Signed-off-by: Dexuan Cui <decui@microsoft.com>
> Cc: Vitaly Kuznetsov <vkuznets@redhat.com>
> Cc: Jack Morgenstein <jackm@mellanox.com>
> Cc: stable@vger.kernel.org
> Cc: Stephen Hemminger <sthemmin@microsoft.com>
> Cc: K. Y. Srinivasan <kys@microsoft.com>
> Cc: Michael Kelley (EOSG) <Michael.H.Kelley@microsoft.com>
> ---
> drivers/pci/host/pci-hyperv.c | 5 +----
> 1 file changed, 1 insertion(+), 4 deletions(-)
>
> diff --git a/drivers/pci/host/pci-hyperv.c b/drivers/pci/host/pci-hyperv.c
> index 1233300f41c6..04edb24c92ee 100644
> --- a/drivers/pci/host/pci-hyperv.c
> +++ b/drivers/pci/host/pci-hyperv.c
> @@ -1796,10 +1796,7 @@ static void hv_eject_device_work(struct work_struct *work)
>
> hpdev = container_of(work, struct hv_pci_dev, wrk);
>
> - if (hpdev->state != hv_pcichild_ejecting) {
> - put_pcichild(hpdev, hv_pcidev_ref_pnp);
> - return;
> - }
> + WARN_ON(hpdev->state != hv_pcichild_ejecting);
>
> /*
> * Ejection can come before or after the PCI bus has been set up, so
> --
> 2.7.4

Reviewed-by: Michael Kelley <mikelley@microsoft.com>