drm/radeon/dpm/atom: fix broken gcc harder

See bugs:
https://bugs.freedesktop.org/show_bug.cgi?id=66932
https://bugs.freedesktop.org/show_bug.cgi?id=66972
https://bugs.freedesktop.org/show_bug.cgi?id=66945

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

1 files changed, 6 insertions, 3 deletions

diff --git a/drivers/gpu/drm/radeon/radeon_atombios.c b/drivers/gpu/drm/radeon/radeon_atombios.c
index 2606ec680ae3..e3f3e8841789 100644
--- a/drivers/gpu/drm/radeon/radeon_atombios.c
+++ b/drivers/gpu/drm/radeon/radeon_atombios.c
@@ -3699,18 +3699,21 @@ int radeon_atom_init_mc_reg_table(struct radeon_device *rdev,
                                                 (ATOM_MEMORY_SETTING_DATA_BLOCK *)
                                                 ((u8 *)reg_block + (2 * sizeof(u16)) +
                                                  le16_to_cpu(reg_block->usRegIndexTblSize));
+                                        ATOM_INIT_REG_INDEX_FORMAT *format = &reg_block->asRegIndexBuf[0];
                                         num_entries = (u8)((le16_to_cpu(reg_block->usRegIndexTblSize)) /
                                                            sizeof(ATOM_INIT_REG_INDEX_FORMAT)) - 1;
                                         if (num_entries > VBIOS_MC_REGISTER_ARRAY_SIZE)
                                                 return -EINVAL;
                                         while (i < num_entries) {
-                                                if (reg_block->asRegIndexBuf[i].ucPreRegDataLength & ACCESS_PLACEHOLDER)
+                                                if (format->ucPreRegDataLength & ACCESS_PLACEHOLDER)
                                                         break;
                                                 reg_table->mc_reg_address[i].s1 =
-                                                        (u16)(le16_to_cpu(reg_block->asRegIndexBuf[i].usRegIndex));
+                                                        (u16)(le16_to_cpu(format->usRegIndex));
                                                 reg_table->mc_reg_address[i].pre_reg_data =
-                                                        (u8)(reg_block->asRegIndexBuf[i].ucPreRegDataLength);
+                                                        (u8)(format->ucPreRegDataLength);
                                                 i++;
+                                                format = (ATOM_INIT_REG_INDEX_FORMAT *)
+                                                        ((u8 *)format + sizeof(ATOM_INIT_REG_INDEX_FORMAT));
                                         }
                                         reg_table->last = i;
                                         while ((*(u32 *)reg_data != END_OF_REG_DATA_BLOCK) &&