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path: root/arch/powerpc/lib/dma-noncoherent.c
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Diffstat (limited to 'arch/powerpc/lib/dma-noncoherent.c')
-rw-r--r--arch/powerpc/lib/dma-noncoherent.c25
1 files changed, 12 insertions, 13 deletions
diff --git a/arch/powerpc/lib/dma-noncoherent.c b/arch/powerpc/lib/dma-noncoherent.c
index 31734c0969c..b7dc4c19f58 100644
--- a/arch/powerpc/lib/dma-noncoherent.c
+++ b/arch/powerpc/lib/dma-noncoherent.c
@@ -77,26 +77,26 @@ static DEFINE_SPINLOCK(consistent_lock);
* the amount of RAM found at boot time.) I would imagine that get_vm_area()
* would have to initialise this each time prior to calling vm_region_alloc().
*/
-struct vm_region {
+struct ppc_vm_region {
struct list_head vm_list;
unsigned long vm_start;
unsigned long vm_end;
};
-static struct vm_region consistent_head = {
+static struct ppc_vm_region consistent_head = {
.vm_list = LIST_HEAD_INIT(consistent_head.vm_list),
.vm_start = CONSISTENT_BASE,
.vm_end = CONSISTENT_END,
};
-static struct vm_region *
-vm_region_alloc(struct vm_region *head, size_t size, gfp_t gfp)
+static struct ppc_vm_region *
+ppc_vm_region_alloc(struct ppc_vm_region *head, size_t size, gfp_t gfp)
{
unsigned long addr = head->vm_start, end = head->vm_end - size;
unsigned long flags;
- struct vm_region *c, *new;
+ struct ppc_vm_region *c, *new;
- new = kmalloc(sizeof(struct vm_region), gfp);
+ new = kmalloc(sizeof(struct ppc_vm_region), gfp);
if (!new)
goto out;
@@ -130,9 +130,9 @@ vm_region_alloc(struct vm_region *head, size_t size, gfp_t gfp)
return NULL;
}
-static struct vm_region *vm_region_find(struct vm_region *head, unsigned long addr)
+static struct ppc_vm_region *ppc_vm_region_find(struct ppc_vm_region *head, unsigned long addr)
{
- struct vm_region *c;
+ struct ppc_vm_region *c;
list_for_each_entry(c, &head->vm_list, vm_list) {
if (c->vm_start == addr)
@@ -151,7 +151,7 @@ void *
__dma_alloc_coherent(size_t size, dma_addr_t *handle, gfp_t gfp)
{
struct page *page;
- struct vm_region *c;
+ struct ppc_vm_region *c;
unsigned long order;
u64 mask = 0x00ffffff, limit; /* ISA default */
@@ -191,7 +191,7 @@ __dma_alloc_coherent(size_t size, dma_addr_t *handle, gfp_t gfp)
/*
* Allocate a virtual address in the consistent mapping region.
*/
- c = vm_region_alloc(&consistent_head, size,
+ c = ppc_vm_region_alloc(&consistent_head, size,
gfp & ~(__GFP_DMA | __GFP_HIGHMEM));
if (c) {
unsigned long vaddr = c->vm_start;
@@ -239,7 +239,7 @@ EXPORT_SYMBOL(__dma_alloc_coherent);
*/
void __dma_free_coherent(size_t size, void *vaddr)
{
- struct vm_region *c;
+ struct ppc_vm_region *c;
unsigned long flags, addr;
pte_t *ptep;
@@ -247,7 +247,7 @@ void __dma_free_coherent(size_t size, void *vaddr)
spin_lock_irqsave(&consistent_lock, flags);
- c = vm_region_find(&consistent_head, (unsigned long)vaddr);
+ c = ppc_vm_region_find(&consistent_head, (unsigned long)vaddr);
if (!c)
goto no_area;
@@ -320,7 +320,6 @@ static int __init dma_alloc_init(void)
ret = -ENOMEM;
break;
}
- WARN_ON(!pmd_none(*pmd));
pte = pte_alloc_kernel(pmd, CONSISTENT_BASE);
if (!pte) {