drm/ati_pcigart: use memset_io to reset the memory
Also don't setup pci_gart if we aren't going to need it.
Signed-off-by: Dave Airlie <airlied@redhat.com>
diff --git a/drivers/gpu/drm/ati_pcigart.c b/drivers/gpu/drm/ati_pcigart.c
index 4d86a62..628eae3 100644
--- a/drivers/gpu/drm/ati_pcigart.c
+++ b/drivers/gpu/drm/ati_pcigart.c
@@ -99,7 +99,7 @@
struct drm_sg_mem *entry = dev->sg;
void *address = NULL;
unsigned long pages;
- u32 *pci_gart, page_base, gart_idx;
+ u32 *pci_gart = NULL, page_base, gart_idx;
dma_addr_t bus_address = 0;
int i, j, ret = 0;
int max_ati_pages, max_real_pages;
@@ -118,6 +118,7 @@
goto done;
}
+ pci_gart = gart_info->table_handle->vaddr;
address = gart_info->table_handle->vaddr;
bus_address = gart_info->table_handle->busaddr;
} else {
@@ -128,7 +129,6 @@
(unsigned long)address);
}
- pci_gart = (u32 *) address;
max_ati_pages = (gart_info->table_size / sizeof(u32));
max_real_pages = max_ati_pages / (PAGE_SIZE / ATI_PCIGART_PAGE_SIZE);
@@ -138,8 +138,7 @@
if (gart_info->gart_table_location == DRM_ATI_GART_MAIN) {
memset(pci_gart, 0, max_ati_pages * sizeof(u32));
} else {
- for (gart_idx = 0; gart_idx < max_ati_pages; gart_idx++)
- DRM_WRITE32(map, gart_idx * sizeof(u32), 0);
+ memset_io((void __iomem *)map->handle, 0, max_ati_pages * sizeof(u32));
}
gart_idx = 0;