mirror of https://gitee.com/openkylin/linux.git
iommu/omap: Remove bogus version check in context save/restore
The omap2_iommu_save_ctx() and omap2_iommu_restore_ctx() performs a sanity version check against a fixed value that is correct only for OMAP2/OMAP3 IOMMUs. This fixed check does not scale for all OMAP2+ IOMMUs and is not absolutely required, so it has been removed. Signed-off-by: Suman Anna <s-anna@ti.com> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
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@ -26,8 +26,6 @@
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/*
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* omap2 architecture specific register bit definitions
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*/
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#define IOMMU_ARCH_VERSION 0x00000011
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/* IRQSTATUS & IRQENABLE */
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#define MMU_IRQ_MULTIHITFAULT (1 << 4)
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#define MMU_IRQ_TABLEWALKFAULT (1 << 3)
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@ -268,8 +266,6 @@ static void omap2_iommu_save_ctx(struct omap_iommu *obj)
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p[i] = iommu_read_reg(obj, i * sizeof(u32));
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dev_dbg(obj->dev, "%s\t[%02d] %08x\n", __func__, i, p[i]);
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}
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BUG_ON(p[0] != IOMMU_ARCH_VERSION);
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}
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static void omap2_iommu_restore_ctx(struct omap_iommu *obj)
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@ -281,8 +277,6 @@ static void omap2_iommu_restore_ctx(struct omap_iommu *obj)
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iommu_write_reg(obj, p[i], i * sizeof(u32));
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dev_dbg(obj->dev, "%s\t[%02d] %08x\n", __func__, i, p[i]);
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}
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BUG_ON(p[0] != IOMMU_ARCH_VERSION);
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}
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static void omap2_cr_to_e(struct cr_regs *cr, struct iotlb_entry *e)
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