Intel variants don't support it.

Signed-off-by: Alex Deucher <alexdeuc...@gmail.com>
---
 drivers/gpu/drm/radeon/radeon_atombios.c |   15 ++++++---------
 drivers/gpu/drm/radeon/radeon_combios.c  |    4 ++++
 drivers/gpu/drm/radeon/rs600.c           |    1 -
 drivers/gpu/drm/radeon/rs690.c           |    2 +-
 4 files changed, 11 insertions(+), 11 deletions(-)

diff --git a/drivers/gpu/drm/radeon/radeon_atombios.c 
b/drivers/gpu/drm/radeon/radeon_atombios.c
index 6df7bd5..3bc2bcd 100644
--- a/drivers/gpu/drm/radeon/radeon_atombios.c
+++ b/drivers/gpu/drm/radeon/radeon_atombios.c
@@ -1032,21 +1032,18 @@ bool radeon_atombios_sideport_present(struct 
radeon_device *rdev)
        u8 frev, crev;
        u16 data_offset;
 
+       /* sideport is AMD only */
+       if (rdev->family == CHIP_RS600)
+               return false;
+
        if (atom_parse_data_header(mode_info->atom_context, index, NULL,
                                   &frev, &crev, &data_offset)) {
                igp_info = (union igp_info *)(mode_info->atom_context->bios +
                                      data_offset);
                switch (crev) {
                case 1:
-                       /* AMD IGPS */
-                       if ((rdev->family == CHIP_RS690) ||
-                           (rdev->family == CHIP_RS740)) {
-                               if (igp_info->info.ulBootUpMemoryClock)
-                                       return true;
-                       } else {
-                               if (igp_info->info.ucMemoryType & 0xf0)
-                                       return true;
-                       }
+                       if (igp_info->info.ulBootUpMemoryClock)
+                               return true;
                        break;
                case 2:
                        if (igp_info->info_2.ucMemoryType & 0x0f)
diff --git a/drivers/gpu/drm/radeon/radeon_combios.c 
b/drivers/gpu/drm/radeon/radeon_combios.c
index cd2a6c2..5e1474c 100644
--- a/drivers/gpu/drm/radeon/radeon_combios.c
+++ b/drivers/gpu/drm/radeon/radeon_combios.c
@@ -693,6 +693,10 @@ bool radeon_combios_sideport_present(struct radeon_device 
*rdev)
        struct drm_device *dev = rdev->ddev;
        u16 igp_info;
 
+       /* sideport is AMD only */
+       if (rdev->family == CHIP_RS400)
+               return false;
+
        igp_info = combios_get_table_offset(dev, 
COMBIOS_INTEGRATED_SYSTEM_INFO_TABLE);
 
        if (igp_info) {
diff --git a/drivers/gpu/drm/radeon/rs600.c b/drivers/gpu/drm/radeon/rs600.c
index 85cd911..cc05b23 100644
--- a/drivers/gpu/drm/radeon/rs600.c
+++ b/drivers/gpu/drm/radeon/rs600.c
@@ -696,7 +696,6 @@ void rs600_mc_init(struct radeon_device *rdev)
        rdev->mc.igp_sideport_enabled = radeon_atombios_sideport_present(rdev);
        base = RREG32_MC(R_000004_MC_FB_LOCATION);
        base = G_000004_MC_FB_START(base) << 16;
-       rdev->mc.igp_sideport_enabled = radeon_atombios_sideport_present(rdev);
        radeon_vram_location(rdev, &rdev->mc, base);
        rdev->mc.gtt_base_align = 0;
        radeon_gtt_location(rdev, &rdev->mc);
diff --git a/drivers/gpu/drm/radeon/rs690.c b/drivers/gpu/drm/radeon/rs690.c
index 6fbb874..3e3f757 100644
--- a/drivers/gpu/drm/radeon/rs690.c
+++ b/drivers/gpu/drm/radeon/rs690.c
@@ -159,8 +159,8 @@ void rs690_mc_init(struct radeon_device *rdev)
        rdev->mc.visible_vram_size = rdev->mc.aper_size;
        base = RREG32_MC(R_000100_MCCFG_FB_LOCATION);
        base = G_000100_MC_FB_START(base) << 16;
-       rs690_pm_info(rdev);
        rdev->mc.igp_sideport_enabled = radeon_atombios_sideport_present(rdev);
+       rs690_pm_info(rdev);
        radeon_vram_location(rdev, &rdev->mc, base);
        rdev->mc.gtt_base_align = rdev->mc.gtt_size - 1;
        radeon_gtt_location(rdev, &rdev->mc);
-- 
1.7.1.1

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