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path: root/drivers/char/agp/backend.c
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Diffstat (limited to 'drivers/char/agp/backend.c')
-rw-r--r--drivers/char/agp/backend.c15
1 files changed, 10 insertions, 5 deletions
diff --git a/drivers/char/agp/backend.c b/drivers/char/agp/backend.c
index 82b43c541c8..27bca34b4a6 100644
--- a/drivers/char/agp/backend.c
+++ b/drivers/char/agp/backend.c
@@ -147,6 +147,7 @@ static int agp_backend_initialize(struct agp_bridge_data *bridge)
printk(KERN_ERR PFX "unable to get memory for scratch page.\n");
return -ENOMEM;
}
+ flush_agp_mappings();
bridge->scratch_page_real = virt_to_gart(addr);
bridge->scratch_page =
@@ -187,9 +188,11 @@ static int agp_backend_initialize(struct agp_bridge_data *bridge)
return 0;
err_out:
- if (bridge->driver->needs_scratch_page)
+ if (bridge->driver->needs_scratch_page) {
bridge->driver->agp_destroy_page(
gart_to_virt(bridge->scratch_page_real));
+ flush_agp_mappings();
+ }
if (got_gatt)
bridge->driver->free_gatt_table(bridge);
if (got_keylist) {
@@ -211,9 +214,11 @@ static void agp_backend_cleanup(struct agp_bridge_data *bridge)
bridge->key_list = NULL;
if (bridge->driver->agp_destroy_page &&
- bridge->driver->needs_scratch_page)
+ bridge->driver->needs_scratch_page) {
bridge->driver->agp_destroy_page(
gart_to_virt(bridge->scratch_page_real));
+ flush_agp_mappings();
+ }
}
/* When we remove the global variable agp_bridge from all drivers
@@ -222,12 +227,12 @@ static void agp_backend_cleanup(struct agp_bridge_data *bridge)
struct agp_bridge_data *agp_alloc_bridge(void)
{
- struct agp_bridge_data *bridge = kmalloc(sizeof(*bridge), GFP_KERNEL);
-
+ struct agp_bridge_data *bridge;
+
+ bridge = kzalloc(sizeof(*bridge), GFP_KERNEL);
if (!bridge)
return NULL;
- memset(bridge, 0, sizeof(*bridge));
atomic_set(&bridge->agp_in_use, 0);
atomic_set(&bridge->current_memory_agp, 0);