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>

diff --git a/drivers/iommu/omap-iommu2.c b/drivers/iommu/omap-iommu2.c
index 2f6a9f7..372141b 100644 (file)
--- a/drivers/iommu/omap-iommu2.c
+++ b/drivers/iommu/omap-iommu2.c
@@ -26,8 +26,6 @@
 /*
  * omap2 architecture specific register bit definitions
  */
-#define IOMMU_ARCH_VERSION     0x00000011
-
 /* IRQSTATUS & IRQENABLE */
 #define MMU_IRQ_MULTIHITFAULT  (1 << 4)
 #define MMU_IRQ_TABLEWALKFAULT (1 << 3)
@@ -268,8 +266,6 @@ static void omap2_iommu_save_ctx(struct omap_iommu *obj)
                p[i] = iommu_read_reg(obj, i * sizeof(u32));
                dev_dbg(obj->dev, "%s\t[%02d] %08x\n", __func__, i, p[i]);
        }
-
-       BUG_ON(p[0] != IOMMU_ARCH_VERSION);
 }
 
 static void omap2_iommu_restore_ctx(struct omap_iommu *obj)
@@ -281,8 +277,6 @@ static void omap2_iommu_restore_ctx(struct omap_iommu *obj)
                iommu_write_reg(obj, p[i], i * sizeof(u32));
                dev_dbg(obj->dev, "%s\t[%02d] %08x\n", __func__, i, p[i]);
        }
-
-       BUG_ON(p[0] != IOMMU_ARCH_VERSION);
 }
 
 static void omap2_cr_to_e(struct cr_regs *cr, struct iotlb_entry *e)