iommu: Regulate EINVAL in ->attach_dev callback functions

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Following the new rules in include/linux/iommu.h kdocs, EINVAL now can be
used to indicate that domain and device are incompatible by a caller that
treats it as a soft failure and tries attaching to another domain.

On the other hand, there are ->attach_dev callback functions returning it
for obvious device-specific errors. They will result in some inefficiency
in the caller handling routine.

Update these places to corresponding errnos following the new rules.

Link: https://lore.kernel.org/r/5924c03bea637f05feb2a20d624bae086b555ec5.1666042872.git.nicolinc@nvidia.com
Reviewed-by: Jean-Philippe Brucker <jean-philippe@linaro.org>
Reviewed-by: Lu Baolu <baolu.lu@linux.intel.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Nicolin Chen <nicolinc@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>

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This commit is contained in:

Nicolin Chen 2022-10-17 16:02:13 -07:00 • committed by Jason Gunthorpe

parent 00208852d3

commit bd7ebb7719

6 changed files with 11 additions and 9 deletions

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2

drivers/iommu/fsl_pamu.c

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4

drivers/iommu/fsl_pamu_domain.c

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6

drivers/iommu/intel/pasid.c

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drivers/iommu/mtk_iommu.c

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drivers/iommu/omap-iommu.c

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drivers/iommu/virtio-iommu.c

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