diff options
| author | Michael Bestas <mkbestas@lineageos.org> | 2020-09-19 12:58:54 +0300 |
|---|---|---|
| committer | Michael Bestas <mkbestas@lineageos.org> | 2020-09-19 12:58:54 +0300 |
| commit | 3b601dd398b0f8a66744c0ecf384a6cbe65e36e7 (patch) | |
| tree | 570d5895dfced5d2e443a7f9b8f6fa5f9a7560f3 /drivers/iommu/intel_irq_remapping.c | |
| parent | a638073161e90ac6dc0ffc2e27cbc4bcd3ff88c3 (diff) | |
| parent | 5fd2d19eeb9767339e1338eb6789495d1812065b (diff) | |
Merge branch 'android-4.4-p' of https://android.googlesource.com/kernel/common into lineage-17.1-caf-msm8998
This brings LA.UM.8.4.r1-05900-8x98.0 up to date with
https://android.googlesource.com/kernel/common/ android-4.4-p at commit:
5fd2d19eeb976 Merge 4.4.236 into android-4.4-p
Conflicts:
drivers/scsi/ufs/ufshcd.c
Change-Id: I22282a0d571bdb72f50d3fc1e2cee4443de1f7f4
Diffstat (limited to 'drivers/iommu/intel_irq_remapping.c')
| -rw-r--r-- | drivers/iommu/intel_irq_remapping.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/drivers/iommu/intel_irq_remapping.c b/drivers/iommu/intel_irq_remapping.c index ac596928f6b4..ce125ec23d2a 100644 --- a/drivers/iommu/intel_irq_remapping.c +++ b/drivers/iommu/intel_irq_remapping.c @@ -486,12 +486,18 @@ static void iommu_enable_irq_remapping(struct intel_iommu *iommu) /* Enable interrupt-remapping */ iommu->gcmd |= DMA_GCMD_IRE; - iommu->gcmd &= ~DMA_GCMD_CFI; /* Block compatibility-format MSIs */ writel(iommu->gcmd, iommu->reg + DMAR_GCMD_REG); - IOMMU_WAIT_OP(iommu, DMAR_GSTS_REG, readl, (sts & DMA_GSTS_IRES), sts); + /* Block compatibility-format MSIs */ + if (sts & DMA_GSTS_CFIS) { + iommu->gcmd &= ~DMA_GCMD_CFI; + writel(iommu->gcmd, iommu->reg + DMAR_GCMD_REG); + IOMMU_WAIT_OP(iommu, DMAR_GSTS_REG, + readl, !(sts & DMA_GSTS_CFIS), sts); + } + /* * With CFI clear in the Global Command register, we should be * protected from dangerous (i.e. compatibility) interrupts |