diff --git a/drivers/gpu/drm/radeon/evergreen.c b/drivers/gpu/drm/radeon/evergreen.c
index 9702e55..21617b0 100644
--- a/drivers/gpu/drm/radeon/evergreen.c
+++ b/drivers/gpu/drm/radeon/evergreen.c
@@ -3350,8 +3350,13 @@ static void evergreen_gpu_init(struct radeon_device *rdev)
 		tmp |= (1 << i);
 	/* if all the backends are disabled, fix it up here */
 	if ((disabled_rb_mask & tmp) == tmp) {
-		for (i = 0; i < rdev->config.evergreen.max_backends; i++)
-			disabled_rb_mask &= ~(1 << i);
+		if (rdev->flags & RADEON_IS_IGP) {
+			/* just enable the first one */
+			disabled_rb_mask &= ~(1 << 0);
+		} else {
+			for (i = 0; i < rdev->config.evergreen.max_backends; i++)
+				disabled_rb_mask &= ~(1 << i);
+		}
 	}
 
 	WREG32(GRBM_GFX_INDEX, INSTANCE_BROADCAST_WRITES | SE_BROADCAST_WRITES);
diff --git a/drivers/gpu/drm/radeon/ni.c b/drivers/gpu/drm/radeon/ni.c
index f59a9e9..38e206f 100644
--- a/drivers/gpu/drm/radeon/ni.c
+++ b/drivers/gpu/drm/radeon/ni.c
@@ -1052,8 +1052,14 @@ static void cayman_gpu_init(struct radeon_device *rdev)
 		tmp |= (1 << i);
 	/* if all the backends are disabled, fix it up here */
 	if ((disabled_rb_mask & tmp) == tmp) {
-		for (i = 0; i < (rdev->config.cayman.max_backends_per_se * rdev->config.cayman.max_shader_engines); i++)
-			disabled_rb_mask &= ~(1 << i);
+		if (rdev->flags & RADEON_IS_IGP) {
+			/* just enable the first one */
+			disabled_rb_mask &= ~(1 << 0);
+		} else {
+			for (i = 0; i < (rdev->config.cayman.max_backends_per_se *
+					 rdev->config.cayman.max_shader_engines); i++)
+				disabled_rb_mask &= ~(1 << i);
+		}
 	}
 
 	WREG32(GRBM_GFX_INDEX, INSTANCE_BROADCAST_WRITES | SE_BROADCAST_WRITES);