disable FB

hc

2024-01-04 1543e317f1da31b75942316931e8f491a8920811

 kernel/drivers/iommu/arm/arm-smmu/qcom_iommu.c
..
..
@@ -275,6 +275,13 @@
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 			ctx->secure_init = true;
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 		}
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+		/* Disable context bank before programming */
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+		iommu_writel(ctx, ARM_SMMU_CB_SCTLR, 0);
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+
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+		/* Clear context bank fault address fault status registers */
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+		iommu_writel(ctx, ARM_SMMU_CB_FAR, 0);
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+		iommu_writel(ctx, ARM_SMMU_CB_FSR, ARM_SMMU_FSR_FAULT);
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+
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 		/* TTBRs */
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 		iommu_writeq(ctx, ARM_SMMU_CB_TTBR0,
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 				pgtbl_cfg.arm_lpae_s1_cfg.ttbr |