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drivers/vfio: Enable VFIO if EEH is not supported 

The existing vfio_pci_open() fails upon error returned from
vfio_spapr_pci_eeh_open(), which breaks POWER7's P5IOC2 PHB
support which this patch brings back.

The patch fixes the issue by dropping the return value of
vfio_spapr_pci_eeh_open().

Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: Gavin Shan <gwshan@linux.vnet.ibm.com>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
hifive-unleashed-5.1
Alexey Kardashevskiy 2014-08-08 10:39:16 -06:00 committed by Alex Williamson
parent 89a2edd62f
commit 9b936c960f
3 changed files with 5 additions and 10 deletions
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6
drivers/vfio/pci/vfio_pci.c
View File

@ -200,11 +200,7 @@ static int vfio_pci_open(void *device_data)
if (ret)
goto error;
ret = vfio_spapr_pci_eeh_open(vdev->pdev);
if (ret) {
vfio_pci_disable(vdev);
goto error;
}
vfio_spapr_pci_eeh_open(vdev->pdev);
}
vdev->refcnt++;
error:

4
drivers/vfio/vfio_spapr_eeh.c
View File

@ -19,9 +19,9 @@
#define DRIVER_DESC "VFIO IOMMU SPAPR EEH"
/* We might build address mapping here for "fast" path later */
int vfio_spapr_pci_eeh_open(struct pci_dev *pdev)
void vfio_spapr_pci_eeh_open(struct pci_dev *pdev)
{
return eeh_dev_open(pdev);
eeh_dev_open(pdev);
}
EXPORT_SYMBOL_GPL(vfio_spapr_pci_eeh_open);

5
include/linux/vfio.h
View File

@ -100,15 +100,14 @@ extern long vfio_external_check_extension(struct vfio_group *group,
struct pci_dev;
#ifdef CONFIG_EEH
extern int vfio_spapr_pci_eeh_open(struct pci_dev *pdev);
extern void vfio_spapr_pci_eeh_open(struct pci_dev *pdev);
extern void vfio_spapr_pci_eeh_release(struct pci_dev *pdev);
extern long vfio_spapr_iommu_eeh_ioctl(struct iommu_group *group,
unsigned int cmd,
unsigned long arg);
#else
static inline int vfio_spapr_pci_eeh_open(struct pci_dev *pdev)
static inline void vfio_spapr_pci_eeh_open(struct pci_dev *pdev)
{
return 0;
}
static inline void vfio_spapr_pci_eeh_release(struct pci_dev *pdev)