agp: Switch mask_memory() method to take address argument again, not page

In commit 07613ba2 ("agp: switch AGP to use page array instead of
unsigned long array") we switched the mask_memory() method to take a
'struct page *' instead of an address. This is painful, because in some
cases it has to be an IOMMU-mapped virtual bus address (in fact,
shouldn't it _always_ be a dma_addr_t returned from pci_map_xxx(), and
we just happen to get lucky most of the time?)

Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>

1 files changed, 4 insertions, 3 deletions

diff --git a/drivers/char/agp/generic.c b/drivers/char/agp/generic.c
index 1e8b461b91f1..a3bcc7ef42f9 100644
--- a/drivers/char/agp/generic.c
+++ b/drivers/char/agp/generic.c
@@ -1132,7 +1132,9 @@ int agp_generic_insert_memory(struct agp_memory * mem, off_t pg_start, int type)
         }
 
         for (i = 0, j = pg_start; i < mem->page_count; i++, j++) {
-                writel(bridge->driver->mask_memory(bridge, mem->pages[i], mask_type),
+                writel(bridge->driver->mask_memory(bridge,
+                                                   phys_to_gart(page_to_phys(mem->pages[i])),
+                                                   mask_type),
                        bridge->gatt_table+j);
         }
         readl(bridge->gatt_table+j-1);  /* PCI Posting. */
@@ -1347,9 +1349,8 @@ void global_cache_flush(void)
 EXPORT_SYMBOL(global_cache_flush);
 
 unsigned long agp_generic_mask_memory(struct agp_bridge_data *bridge,
-                                      struct page *page, int type)
+                                      dma_addr_t addr, int type)
 {
-        unsigned long addr = phys_to_gart(page_to_phys(page));
         /* memory type is ignored in the generic routine */
         if (bridge->driver->masks)
                 return addr | bridge->driver->masks[0].mask;