drm/radeon: fix typo in radeon_atom_init_mc_reg_table()

Bad pointer math.  Fixes hangs in state transitions with
BTC+ asics.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/radeon/radeon_atombios.c b/drivers/gpu/drm/radeon/radeon_atombios.c
index dfcf74a..70d8687 100644 (file)
--- a/drivers/gpu/drm/radeon/radeon_atombios.c
+++ b/drivers/gpu/drm/radeon/radeon_atombios.c
@@ -3732,7 +3732,8 @@ int radeon_atom_init_mc_reg_table(struct radeon_device *rdev,
                                                        }
                                                        num_ranges++;
                                                }
-                                               reg_data += le16_to_cpu(reg_block->usRegDataBlkSize);
+                                               reg_data = (ATOM_MEMORY_SETTING_DATA_BLOCK *)
+                                                       ((u8 *)reg_data + le16_to_cpu(reg_block->usRegDataBlkSize));
                                        }
                                        if (*(u32 *)reg_data != END_OF_REG_DATA_BLOCK)
                                                return -EINVAL;