diff options
Diffstat (limited to 'drivers/char')
| -rw-r--r-- | drivers/char/agp/uninorth-agp.c | 18 |
1 files changed, 16 insertions, 2 deletions
diff --git a/drivers/char/agp/uninorth-agp.c b/drivers/char/agp/uninorth-agp.c index 03f95ec08f59..880d3f6d5b98 100644 --- a/drivers/char/agp/uninorth-agp.c +++ b/drivers/char/agp/uninorth-agp.c @@ -146,13 +146,20 @@ static int uninorth_insert_memory(struct agp_memory *mem, off_t pg_start, { int i, j, num_entries; void *temp; + int mask_type; temp = agp_bridge->current_size; num_entries = A_SIZE_32(temp)->num_entries; - if (type != 0 || mem->type != 0) + if (type != mem->type) + return -EINVAL; + + mask_type = agp_bridge->driver->agp_type_to_mask_type(agp_bridge, type); + if (mask_type != 0) { /* We know nothing of memory types */ return -EINVAL; + } + if ((pg_start + mem->page_count) > num_entries) return -EINVAL; @@ -184,13 +191,20 @@ static int u3_insert_memory(struct agp_memory *mem, off_t pg_start, int type) int i, num_entries; void *temp; u32 *gp; + int mask_type; temp = agp_bridge->current_size; num_entries = A_SIZE_32(temp)->num_entries; - if (type != 0 || mem->type != 0) + if (type != mem->type) + return -EINVAL; + + mask_type = agp_bridge->driver->agp_type_to_mask_type(agp_bridge, type); + if (mask_type != 0) { /* We know nothing of memory types */ return -EINVAL; + } + if ((pg_start + mem->page_count) > num_entries) return -EINVAL; |