3.0-stable review patch. If anyone has any objections, please let me know.
------------------
From: Alex Deucher <alexander.deuc...@amd.com>
commit fb93df1c2d8b3b1fb16d6ee9e32554e0c038815d upstream.
The table has the following format:
typedef struct _ATOM_SRC_DST_TABLE_FOR_ONE_OBJECT //usSrcDstTableOffset
pointing to this structure
{
UCHAR ucNumberOfSrc;
USHORT usSrcObjectID[1];
UCHAR ucNumberOfDst;
USHORT usDstObjectID[1];
}ATOM_SRC_DST_TABLE_FOR_ONE_OBJECT;
usSrcObjectID[] and usDstObjectID[] are variably sized, so we
can't access them directly. Use pointers and update the offset
appropriately when accessing the Dst members.
Signed-off-by: Alex Deucher <alexander.deuc...@amd.com>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
drivers/gpu/drm/radeon/radeon_atombios.c | 9 ++++++---
1 file changed, 6 insertions(+), 3 deletions(-)
--- a/drivers/gpu/drm/radeon/radeon_atombios.c
+++ b/drivers/gpu/drm/radeon/radeon_atombios.c
@@ -751,13 +751,16 @@ bool radeon_get_atom_connector_info_from
(ATOM_SRC_DST_TABLE_FOR_ONE_OBJECT *)
(ctx->bios +
data_offset +
le16_to_cpu(router_obj->asObjects[k].usSrcDstTableOffset));
+ u8 *num_dst_objs = (u8
*)
+ ((u8
*)router_src_dst_table + 1 +
+
(router_src_dst_table->ucNumberOfSrc * 2));
+ u16 *dst_objs = (u16
*)(num_dst_objs + 1);
int enum_id;
router.router_id =
router_obj_id;
- for (enum_id = 0;
enum_id < router_src_dst_table->ucNumberOfDst;
- enum_id++) {
+ for (enum_id = 0;
enum_id < (*num_dst_objs); enum_id++) {
if
(le16_to_cpu(path->usConnObjectId) ==
-
le16_to_cpu(router_src_dst_table->usDstObjectID[enum_id]))
+
le16_to_cpu(dst_objs[enum_id]))
break;
}
--
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