From: Alex Deucher <alexander.deucher@amd.com>
Date: Mon, 1 Jul 2013 17:33:53 +0000 (-0400)
Subject: drm/radeon: fix typo in radeon_atom_init_mc_reg_table()
X-Git-Tag: accepted/tizen/common/20141203.182822~1901^2~22^2~9
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=4da18e26e0cc2387597ff57ac33df1bc6369fbed;p=platform%2Fkernel%2Flinux-arm64.git

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
--- 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;