diff options
| author | Miao Zhong <zhongmiao@hisilicon.com> | 2018-07-23 20:56:58 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-09-26 08:36:30 +0200 |
| commit | bd08974f90fbcee93e4807696175bc8e09d9e624 (patch) | |
| tree | 58e681322797aa424fccd5b78cf078743271c312 /drivers/iommu | |
| parent | 6d1659b35cd1590960dee2049e9d134610c55392 (diff) | |
iommu/arm-smmu-v3: sync the OVACKFLG to PRIQ consumer register
[ Upstream commit 0d535967ac658966c6ade8f82b5799092f7d5441 ]
When PRI queue occurs overflow, driver should update the OVACKFLG to
the PRIQ consumer register, otherwise subsequent PRI requests will not
be processed.
Cc: Will Deacon <will.deacon@arm.com>
Cc: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Miao Zhong <zhongmiao@hisilicon.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/iommu')
| -rw-r--r-- | drivers/iommu/arm-smmu-v3.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/iommu/arm-smmu-v3.c b/drivers/iommu/arm-smmu-v3.c index 7f294f785ce6..ff4be1174ff0 100644 --- a/drivers/iommu/arm-smmu-v3.c +++ b/drivers/iommu/arm-smmu-v3.c @@ -1233,6 +1233,7 @@ static irqreturn_t arm_smmu_priq_thread(int irq, void *dev) /* Sync our overflow flag, as we believe we're up to speed */ q->cons = Q_OVF(q, q->prod) | Q_WRP(q, q->cons) | Q_IDX(q, q->cons); + writel(q->cons, q->cons_reg); return IRQ_HANDLED; } |