drm/radeon: RS600: fix interrupt handling

the checks weren't updated when RS600 support
was added.

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@linux.ie>
diff --git a/drivers/gpu/drm/radeon/radeon_drv.c b/drivers/gpu/drm/radeon/radeon_drv.c
index 1e3b255..2cb4f32 100644
--- a/drivers/gpu/drm/radeon/radeon_drv.c
+++ b/drivers/gpu/drm/radeon/radeon_drv.c
@@ -46,7 +46,7 @@
 	drm_radeon_private_t *dev_priv = dev->dev_private;
 
 	/* Disable *all* interrupts */
-	if ((dev_priv->flags & RADEON_FAMILY_MASK) >= CHIP_RS690)
+	if ((dev_priv->flags & RADEON_FAMILY_MASK) >= CHIP_RS600)
 		RADEON_WRITE(R500_DxMODE_INT_MASK, 0);
 	RADEON_WRITE(RADEON_GEN_INT_CNTL, 0);
 	return 0;
@@ -57,7 +57,7 @@
 	drm_radeon_private_t *dev_priv = dev->dev_private;
 
 	/* Restore interrupt registers */
-	if ((dev_priv->flags & RADEON_FAMILY_MASK) >= CHIP_RS690)
+	if ((dev_priv->flags & RADEON_FAMILY_MASK) >= CHIP_RS600)
 		RADEON_WRITE(R500_DxMODE_INT_MASK, dev_priv->r500_disp_irq_reg);
 	RADEON_WRITE(RADEON_GEN_INT_CNTL, dev_priv->irq_enable_reg);
 	return 0;