iommu/omap: Remove omap_iommu_arch_version() and version field

The function omap_iommu_arch_version() is not used anymore,
and is not required either, so remove it. The .version field
in struct iommu_functions that this function uses is also
removed, as it is not really an ops to retrieve a version and
there won't be any usage for this field either.
Signed-off-by: NSuman Anna <s-anna@ti.com>
Acked-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: NJoerg Roedel <jroedel@suse.de>

drivers/iommu/omap-iommu.c

@@ -138,15 +138,6 @@ void omap_iommu_restore_ctx(struct device *dev)
 }
 EXPORT_SYMBOL_GPL(omap_iommu_restore_ctx);
 
-/**
- * omap_iommu_arch_version - Return running iommu arch version
- **/
-u32 omap_iommu_arch_version(void)
-{
-	return arch_iommu->version;
-}
-EXPORT_SYMBOL_GPL(omap_iommu_arch_version);
-
 static int iommu_enable(struct omap_iommu *obj)
 {
 	int err;

drivers/iommu/omap-iommu.h

@@ -70,8 +70,6 @@ struct cr_regs {
 
 /* architecture specific functions */
 struct iommu_functions {
-	unsigned long	version;
-
 	int (*enable)(struct omap_iommu *obj);
 	void (*disable)(struct omap_iommu *obj);
 	void (*set_twl)(struct omap_iommu *obj, bool on);
@@ -191,8 +189,6 @@ static inline struct omap_iommu *dev_to_omap_iommu(struct device *dev)
 /*
  * global functions
  */
-extern u32 omap_iommu_arch_version(void);
-
 extern void omap_iotlb_cr_to_e(struct cr_regs *cr, struct iotlb_entry *e);
 
 extern int

drivers/iommu/omap-iommu2.c

@@ -297,8 +297,6 @@ static void omap2_cr_to_e(struct cr_regs *cr, struct iotlb_entry *e)
 }
 
 static const struct iommu_functions omap2_iommu_ops = {
-	.version	= IOMMU_ARCH_VERSION,
-
 	.enable		= omap2_iommu_enable,
 	.disable	= omap2_iommu_disable,
 	.set_twl	= omap2_iommu_set_twl,