diff options
| -rw-r--r-- | drivers/iommu/arm-smmu-v3.c | 17 |
1 files changed, 9 insertions, 8 deletions
diff --git a/drivers/iommu/arm-smmu-v3.c b/drivers/iommu/arm-smmu-v3.c index 606852f18808..6b1ae4e09616 100644 --- a/drivers/iommu/arm-smmu-v3.c +++ b/drivers/iommu/arm-smmu-v3.c @@ -2020,21 +2020,23 @@ static int arm_smmu_init_strtab_2lvl(struct arm_smmu_device *smmu) { void *strtab; u64 reg; - u32 size; + u32 size, l1size; int ret; struct arm_smmu_strtab_cfg *cfg = &smmu->strtab_cfg; /* Calculate the L1 size, capped to the SIDSIZE */ size = STRTAB_L1_SZ_SHIFT - (ilog2(STRTAB_L1_DESC_DWORDS) + 3); size = min(size, smmu->sid_bits - STRTAB_SPLIT); - if (size + STRTAB_SPLIT < smmu->sid_bits) + cfg->num_l1_ents = 1 << size; + + size += STRTAB_SPLIT; + if (size < smmu->sid_bits) dev_warn(smmu->dev, "2-level strtab only covers %u/%u bits of SID\n", - size + STRTAB_SPLIT, smmu->sid_bits); + size, smmu->sid_bits); - cfg->num_l1_ents = 1 << size; - size = cfg->num_l1_ents * (STRTAB_L1_DESC_DWORDS << 3); - strtab = dma_zalloc_coherent(smmu->dev, size, &cfg->strtab_dma, + l1size = cfg->num_l1_ents * (STRTAB_L1_DESC_DWORDS << 3); + strtab = dma_zalloc_coherent(smmu->dev, l1size, &cfg->strtab_dma, GFP_KERNEL); if (!strtab) { dev_err(smmu->dev, @@ -2055,8 +2057,7 @@ static int arm_smmu_init_strtab_2lvl(struct arm_smmu_device *smmu) ret = arm_smmu_init_l1_strtab(smmu); if (ret) dma_free_coherent(smmu->dev, - cfg->num_l1_ents * - (STRTAB_L1_DESC_DWORDS << 3), + l1size, strtab, cfg->strtab_dma); return ret; |