Merge branches 'devel-mux' and 'devel-misc' into omap-for-linus

3 files changed, 20 insertions, 23 deletions

diff --git a/arch/arm/plat-omap/include/plat/iovmm.h b/arch/arm/plat-omap/include/plat/iovmm.h
index bdc7ce5d7a4..32a2f6c4d39 100644
--- a/arch/arm/plat-omap/include/plat/iovmm.h
+++ b/arch/arm/plat-omap/include/plat/iovmm.h
@@ -71,8 +71,6 @@ struct iovm_struct {
 #define IOVMF_LINEAR_MASK	(3 << (2 + IOVMF_SW_SHIFT))
 
 #define IOVMF_DA_FIXED		(1 << (4 + IOVMF_SW_SHIFT))
-#define IOVMF_DA_ANON		(2 << (4 + IOVMF_SW_SHIFT))
-#define IOVMF_DA_MASK		(3 << (4 + IOVMF_SW_SHIFT))
 
 
 extern struct iovm_struct *find_iovm_area(struct iommu *obj, u32 da);
diff --git a/arch/arm/plat-omap/iommu.c b/arch/arm/plat-omap/iommu.c
index e3eb0380090..8a51fd58f65 100644
--- a/arch/arm/plat-omap/iommu.c
+++ b/arch/arm/plat-omap/iommu.c
@@ -982,11 +982,6 @@ static int __devinit omap_iommu_probe(struct platform_device *pdev)
 		err = -ENODEV;
 		goto err_mem;
 	}
-	obj->regbase = ioremap(res->start, resource_size(res));
-	if (!obj->regbase) {
-		err = -ENOMEM;
-		goto err_mem;
-	}
 
 	res = request_mem_region(res->start, resource_size(res),
 				 dev_name(&pdev->dev));
@@ -995,6 +990,12 @@ static int __devinit omap_iommu_probe(struct platform_device *pdev)
 		goto err_mem;
 	}
 
+	obj->regbase = ioremap(res->start, resource_size(res));
+	if (!obj->regbase) {
+		err = -ENOMEM;
+		goto err_ioremap;
+	}
+
 	irq = platform_get_irq(pdev, 0);
 	if (irq < 0) {
 		err = -ENODEV;
@@ -1023,8 +1024,9 @@ static int __devinit omap_iommu_probe(struct platform_device *pdev)
 err_pgd:
 	free_irq(irq, obj);
 err_irq:
-	release_mem_region(res->start, resource_size(res));
 	iounmap(obj->regbase);
+err_ioremap:
+	release_mem_region(res->start, resource_size(res));
 err_mem:
 	clk_put(obj->clk);
 err_clk:
diff --git a/arch/arm/plat-omap/iovmm.c b/arch/arm/plat-omap/iovmm.c
index 6dc1296c8c7..51ef43e8def 100644
--- a/arch/arm/plat-omap/iovmm.c
+++ b/arch/arm/plat-omap/iovmm.c
@@ -271,20 +271,21 @@ static struct iovm_struct *alloc_iovm_area(struct iommu *obj, u32 da,
 					   size_t bytes, u32 flags)
 {
 	struct iovm_struct *new, *tmp;
-	u32 start, prev_end, alignement;
+	u32 start, prev_end, alignment;
 
 	if (!obj || !bytes)
 		return ERR_PTR(-EINVAL);
 
 	start = da;
-	alignement = PAGE_SIZE;
+	alignment = PAGE_SIZE;
 
-	if (flags & IOVMF_DA_ANON) {
-		start = obj->da_start;
+	if (~flags & IOVMF_DA_FIXED) {
+		/* Don't map address 0 */
+		start = obj->da_start ? obj->da_start : alignment;
 
 		if (flags & IOVMF_LINEAR)
-			alignement = iopgsz_max(bytes);
-		start = roundup(start, alignement);
+			alignment = iopgsz_max(bytes);
+		start = roundup(start, alignment);
 	} else if (start < obj->da_start || start > obj->da_end ||
 					obj->da_end - start < bytes) {
 		return ERR_PTR(-EINVAL);
@@ -303,8 +304,8 @@ static struct iovm_struct *alloc_iovm_area(struct iommu *obj, u32 da,
 		if (tmp->da_start > start && (tmp->da_start - start) >= bytes)
 			goto found;
 
-		if (tmp->da_end >= start && flags & IOVMF_DA_ANON)
-			start = roundup(tmp->da_end + 1, alignement);
+		if (tmp->da_end >= start && ~flags & IOVMF_DA_FIXED)
+			start = roundup(tmp->da_end + 1, alignment);
 
 		prev_end = tmp->da_end;
 	}
@@ -650,7 +651,6 @@ u32 iommu_vmap(struct iommu *obj, u32 da, const struct sg_table *sgt,
 	flags &= IOVMF_HW_MASK;
 	flags |= IOVMF_DISCONT;
 	flags |= IOVMF_MMIO;
-	flags |= (da ? IOVMF_DA_FIXED : IOVMF_DA_ANON);
 
 	da = __iommu_vmap(obj, da, sgt, va, bytes, flags);
 	if (IS_ERR_VALUE(da))
@@ -690,7 +690,7 @@ EXPORT_SYMBOL_GPL(iommu_vunmap);
  * @flags:	iovma and page property
  *
  * Allocate @bytes linearly and creates 1-n-1 mapping and returns
- * @da again, which might be adjusted if 'IOVMF_DA_ANON' is set.
+ * @da again, which might be adjusted if 'IOVMF_DA_FIXED' is not set.
  */
 u32 iommu_vmalloc(struct iommu *obj, u32 da, size_t bytes, u32 flags)
 {
@@ -709,7 +709,6 @@ u32 iommu_vmalloc(struct iommu *obj, u32 da, size_t bytes, u32 flags)
 	flags &= IOVMF_HW_MASK;
 	flags |= IOVMF_DISCONT;
 	flags |= IOVMF_ALLOC;
-	flags |= (da ? IOVMF_DA_FIXED : IOVMF_DA_ANON);
 
 	sgt = sgtable_alloc(bytes, flags, da, 0);
 	if (IS_ERR(sgt)) {
@@ -780,7 +779,7 @@ static u32 __iommu_kmap(struct iommu *obj, u32 da, u32 pa, void *va,
  * @flags:	iovma and page property
  *
  * Creates 1-1-1 mapping and returns @da again, which can be
- * adjusted if 'IOVMF_DA_ANON' is set.
+ * adjusted if 'IOVMF_DA_FIXED' is not set.
  */
 u32 iommu_kmap(struct iommu *obj, u32 da, u32 pa, size_t bytes,
 		 u32 flags)
@@ -799,7 +798,6 @@ u32 iommu_kmap(struct iommu *obj, u32 da, u32 pa, size_t bytes,
 	flags &= IOVMF_HW_MASK;
 	flags |= IOVMF_LINEAR;
 	flags |= IOVMF_MMIO;
-	flags |= (da ? IOVMF_DA_FIXED : IOVMF_DA_ANON);
 
 	da = __iommu_kmap(obj, da, pa, va, bytes, flags);
 	if (IS_ERR_VALUE(da))
@@ -838,7 +836,7 @@ EXPORT_SYMBOL_GPL(iommu_kunmap);
  * @flags:	iovma and page property
  *
  * Allocate @bytes linearly and creates 1-1-1 mapping and returns
- * @da again, which might be adjusted if 'IOVMF_DA_ANON' is set.
+ * @da again, which might be adjusted if 'IOVMF_DA_FIXED' is not set.
  */
 u32 iommu_kmalloc(struct iommu *obj, u32 da, size_t bytes, u32 flags)
 {
@@ -858,7 +856,6 @@ u32 iommu_kmalloc(struct iommu *obj, u32 da, size_t bytes, u32 flags)
 	flags &= IOVMF_HW_MASK;
 	flags |= IOVMF_LINEAR;
 	flags |= IOVMF_ALLOC;
-	flags |= (da ? IOVMF_DA_FIXED : IOVMF_DA_ANON);
 
 	da = __iommu_kmap(obj, da, pa, va, bytes, flags);
 	if (IS_ERR_VALUE(da))