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| author | Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> | 2017-05-27 19:17:44 +0530 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2017-05-30 11:31:33 +0200 |
| commit | 4dac3210c54a04be9c187dd31b4debb46e3d792b (patch) | |
| tree | 7b1cef9d31c8af430ec7bd066cd7ddc60204d4b2 /drivers/acpi/arm64 | |
| parent | a93a121a96531b99d6feb8db96417b49e1bb28e8 (diff) | |
| download | linux-4dac3210c54a04be9c187dd31b4debb46e3d792b.tar.bz2 | |
ACPI/IORT: Move the check to get iommu_ops from translated fwspec
With IOMMU probe deferral, iort_iommu_configure can be called
multiple times for the same device. Hence we have a check
to see if the device's fwspec is already translated and return
the iommu_ops from that directly. But the check is wrongly
placed in iort_iommu_xlate, which breaks devices with multiple
sids. Move the check to iort_iommu_configure.
Fixes: 5a1bb638d567 ("drivers: acpi: Handle IOMMU lookup failure with deferred probing or error")
Tested-by: Nate Watterson <nwatters@codeaurora.org>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers/acpi/arm64')
| -rw-r--r-- | drivers/acpi/arm64/iort.c | 16 |
1 files changed, 8 insertions, 8 deletions
diff --git a/drivers/acpi/arm64/iort.c b/drivers/acpi/arm64/iort.c index 16e101f1f69d..797b28dc7b34 100644 --- a/drivers/acpi/arm64/iort.c +++ b/drivers/acpi/arm64/iort.c @@ -666,14 +666,6 @@ static const struct iommu_ops *iort_iommu_xlate(struct device *dev, int ret = -ENODEV; struct fwnode_handle *iort_fwnode; - /* - * If we already translated the fwspec there - * is nothing left to do, return the iommu_ops. - */ - ops = iort_fwspec_iommu_ops(dev->iommu_fwspec); - if (ops) - return ops; - if (node) { iort_fwnode = iort_get_fwnode(node); if (!iort_fwnode) @@ -735,6 +727,14 @@ const struct iommu_ops *iort_iommu_configure(struct device *dev) u32 streamid = 0; int err; + /* + * If we already translated the fwspec there + * is nothing left to do, return the iommu_ops. + */ + ops = iort_fwspec_iommu_ops(dev->iommu_fwspec); + if (ops) + return ops; + if (dev_is_pci(dev)) { struct pci_bus *bus = to_pci_dev(dev)->bus; u32 rid; |