OSDN Git Service

iommu/arm-smmu: Fix broken ATOS check
authorWill Deacon <will.deacon@arm.com>
Mon, 29 Jun 2015 16:47:42 +0000 (17:47 +0100)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Fri, 10 Jul 2015 16:45:39 +0000 (09:45 -0700)
commit5679d4750b90b3c763fb2a67e0874454484549b8
treed6151269003bf66e130ab8d187efec9518793c25
parent956cf7f4de7930d8a39b71e507ce826752c02173
iommu/arm-smmu: Fix broken ATOS check

commit d38f0ff9ab35414644995bae187d015c31aae19c upstream.

Commit 83a60ed8f0b5 ("iommu/arm-smmu: fix ARM_SMMU_FEAT_TRANS_OPS
condition") accidentally negated the ID0_ATOSNS predicate in the ATOS
feature check, causing the driver to attempt ATOS requests on SMMUv2
hardware without the ATOS feature implemented.

This patch restores the predicate to the correct value.

Reported-by: Varun Sethi <varun.sethi@freescale.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/iommu/arm-smmu.c