[PATCH] sgi-agp: fixes a problem with accessing GART memory in sgi_tioca_insert_memory and sgi_tioca_remove_memory
This patch fixes a problem with accessing GART memory in
sgi_tioca_insert_memory and sgi_tioca_remove_memory.
sgi-agp.c | 12 +++++++++---
1 files changed, 9 insertions(+), 3 deletions(-)
Signed-off-by: Mike Werner <werner@sgi.com>
Signed-off-by: Dave Jones <davej@redhat.com>
diff --git a/drivers/char/agp/sgi-agp.c b/drivers/char/agp/sgi-agp.c
index 4b3eda2..d3aa159 100644
--- a/drivers/char/agp/sgi-agp.c
+++ b/drivers/char/agp/sgi-agp.c
@@ -133,11 +133,14 @@
off_t j;
void *temp;
struct agp_bridge_data *bridge;
+ u64 *table;
bridge = mem->bridge;
if (!bridge)
return -EINVAL;
+ table = (u64 *)bridge->gatt_table;
+
temp = bridge->current_size;
switch (bridge->driver->size_type) {
@@ -175,7 +178,7 @@
j = pg_start;
while (j < (pg_start + mem->page_count)) {
- if (*(bridge->gatt_table + j))
+ if (table[j])
return -EBUSY;
j++;
}
@@ -186,7 +189,7 @@
}
for (i = 0, j = pg_start; i < mem->page_count; i++, j++) {
- *(bridge->gatt_table + j) =
+ table[j] =
bridge->driver->mask_memory(bridge, mem->memory[i],
mem->type);
}
@@ -200,6 +203,7 @@
{
size_t i;
struct agp_bridge_data *bridge;
+ u64 *table;
bridge = mem->bridge;
if (!bridge)
@@ -209,8 +213,10 @@
return -EINVAL;
}
+ table = (u64 *)bridge->gatt_table;
+
for (i = pg_start; i < (mem->page_count + pg_start); i++) {
- *(bridge->gatt_table + i) = 0;
+ table[i] = 0;
}
bridge->driver->tlb_flush(mem);