iommu/arm-smmu: fix s2cr and smr teardown on device detach from domain

Browse source

When we attach a device to a domain, we configure the SMRs (if we have
any) to match the Stream IDs for the corresponding SMMU master and
program the s2crs accordingly. However, on detach we tear down the s2crs
assuming stream-indexing (as opposed to stream-matching) and SMRs
assuming they are present.

This patch fixes the device detach code so that it operates as a
converse of the attach code.

Cc: <stable@vger.kernel.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>

...

This commit is contained in:

Will Deacon 2014-07-15 11:22:24 +01:00

parent 93b14135cf

commit 43b412bedb

1 changed files with 12 additions and 15 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

27

drivers/iommu/arm-smmu.c

View file