The existing vfio_pci_open() fails if there is no EEH support for PCI.
This breaks POWER7's P5IOC2 PHB support which this patch brings back.
It is a warning because this should not normally happen on supported
configurations such as POWER8+IODA so we always want to see it in dmesg.
It is _once() as the message may be triggered by non-privileged userspace
and we do not want to pollute dmesg.
Signed-off-by: Alexey Kardashevskiy <aik@xxxxxxxxx>
---
Changes:
v2:
* discussed with Ben Herrenschmidt and did s/pr_warn/pr_warn_once/
* updated commit log
---
drivers/vfio/pci/vfio_pci.c | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)
diff --git a/drivers/vfio/pci/vfio_pci.c b/drivers/vfio/pci/vfio_pci.c
index e2ee80f..68dc8da 100644
--- a/drivers/vfio/pci/vfio_pci.c
+++ b/drivers/vfio/pci/vfio_pci.c
@@ -179,10 +179,8 @@ static int vfio_pci_open(void *device_data)
goto error;
ret = vfio_spapr_pci_eeh_open(vdev->pdev);
- if (ret) {
- vfio_pci_disable(vdev);
- goto error;
- }
+ if (ret)
+ pr_warn_once("EEH is not supported\n");
}
return 0;
--
2.0.0
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