iommu/exynos: Rename update_pte()

The name "update_pte" is a little too generic, and can end up clashing
with architecture pagetable code leaked out of common mm headers. Rename
it to something more appropriately namespaced.

Reported-by: kernel test robot <lkp@intel.com>
Acked-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Robin Murphy <robin.murphy@arm.com>

Link: https://lore.kernel.org/r/829bb5dc18e734870b75db673ddce86e7e37fc73.1594727968.git.robin.murphy@arm.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>

Author: rmurphy-arm

drivers/iommu/exynos-iommu.c

@@ -721,7 +721,7 @@ static struct platform_driver exynos_sysmmu_driver __refdata = {
 	}
 };
 
-static inline void update_pte(sysmmu_pte_t *ent, sysmmu_pte_t val)
+static inline void exynos_iommu_set_pte(sysmmu_pte_t *ent, sysmmu_pte_t val)
 {
 	dma_sync_single_for_cpu(dma_dev, virt_to_phys(ent), sizeof(*ent),
 				DMA_TO_DEVICE);
@@ -933,7 +933,7 @@ static sysmmu_pte_t *alloc_lv2entry(struct exynos_iommu_domain *domain,
 		if (!pent)
 			return ERR_PTR(-ENOMEM);
 
-		update_pte(sent, mk_lv1ent_page(virt_to_phys(pent)));
+		exynos_iommu_set_pte(sent, mk_lv1ent_page(virt_to_phys(pent)));
 		kmemleak_ignore(pent);
 		*pgcounter = NUM_LV2ENTRIES;
 		handle = dma_map_single(dma_dev, pent, LV2TABLE_SIZE,
@@ -994,7 +994,7 @@ static int lv1set_section(struct exynos_iommu_domain *domain,
 		*pgcnt = 0;
 	}
 
-	update_pte(sent, mk_lv1ent_sect(paddr, prot));
+	exynos_iommu_set_pte(sent, mk_lv1ent_sect(paddr, prot));
 
 	spin_lock(&domain->lock);
 	if (lv1ent_page_zero(sent)) {
@@ -1018,7 +1018,7 @@ static int lv2set_page(sysmmu_pte_t *pent, phys_addr_t paddr, size_t size,
 		if (WARN_ON(!lv2ent_fault(pent)))
 			return -EADDRINUSE;
 
-		update_pte(pent, mk_lv2ent_spage(paddr, prot));
+		exynos_iommu_set_pte(pent, mk_lv2ent_spage(paddr, prot));
 		*pgcnt -= 1;
 	} else { /* size == LPAGE_SIZE */
 		int i;
@@ -1150,7 +1150,7 @@ static size_t exynos_iommu_unmap(struct iommu_domain *iommu_domain,
 		}
 
 		/* workaround for h/w bug in System MMU v3.3 */
-		update_pte(ent, ZERO_LV2LINK);
+		exynos_iommu_set_pte(ent, ZERO_LV2LINK);
 		size = SECT_SIZE;
 		goto done;
 	}
@@ -1171,7 +1171,7 @@ static size_t exynos_iommu_unmap(struct iommu_domain *iommu_domain,
 	}
 
 	if (lv2ent_small(ent)) {
-		update_pte(ent, 0);
+		exynos_iommu_set_pte(ent, 0);
 		size = SPAGE_SIZE;
 		domain->lv2entcnt[lv1ent_offset(iova)] += 1;
 		goto done;