2 files changed, 14 insertions, 13 deletions

diff --git a/drivers/gpu/drm/radeon/radeon_cp.c b/drivers/gpu/drm/radeon/radeon_cp.c
index 59a2132a8f57..073894824e6b 100644
--- a/drivers/gpu/drm/radeon/radeon_cp.c
+++ b/drivers/gpu/drm/radeon/radeon_cp.c
@@ -653,15 +653,16 @@ static void radeon_cp_init_ring_buffer(struct drm_device * dev,
         RADEON_WRITE(RADEON_SCRATCH_UMSK, 0x7);
 
         /* Turn on bus mastering */
-        if (((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_RS400) ||
-            ((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_RS690) ||
+        if (((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_RS690) ||
             ((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_RS740)) {
-                /* rs400, rs690/rs740 */
-                tmp = RADEON_READ(RADEON_BUS_CNTL) & ~RS400_BUS_MASTER_DIS;
+                /* rs600/rs690/rs740 */
+                tmp = RADEON_READ(RADEON_BUS_CNTL) & ~RS600_BUS_MASTER_DIS;
                 RADEON_WRITE(RADEON_BUS_CNTL, tmp);
-        } else if (!(((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_RV380) ||
-                    ((dev_priv->flags & RADEON_FAMILY_MASK) >= CHIP_R423))) {
-                /* r1xx, r2xx, r300, r(v)350, r420/r481, rs480 */
+        } else if (((dev_priv->flags & RADEON_FAMILY_MASK) <= CHIP_RV350) ||
+                   ((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_R420) ||
+                   ((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_RS400) ||
+                   ((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_RS480)) {
+                /* r1xx, r2xx, r300, r(v)350, r420/r481, rs400/rs480 */
                 tmp = RADEON_READ(RADEON_BUS_CNTL) & ~RADEON_BUS_MASTER_DIS;
                 RADEON_WRITE(RADEON_BUS_CNTL, tmp);
         } /* PCIE cards appears to not need this */
diff --git a/drivers/gpu/drm/radeon/radeon_drv.h b/drivers/gpu/drm/radeon/radeon_drv.h
index 4dbb813910c3..02f5575ba395 100644
--- a/drivers/gpu/drm/radeon/radeon_drv.h
+++ b/drivers/gpu/drm/radeon/radeon_drv.h
@@ -447,12 +447,12 @@ extern int r300_do_cp_cmdbuf(struct drm_device *dev,
  * handling, not bus mastering itself.
  */
 #define RADEON_BUS_CNTL                 0x0030
-/* r1xx, r2xx, r300, r(v)350, r420/r481, rs480 */
+/* r1xx, r2xx, r300, r(v)350, r420/r481, rs400/rs480 */
 #       define RADEON_BUS_MASTER_DIS            (1 << 6)
-/* rs400, rs690/rs740 */
-#       define RS400_BUS_MASTER_DIS             (1 << 14)
-#       define RS400_MSI_REARM                  (1 << 20)
-/* see RS480_MSI_REARM in AIC_CNTL for rs480 */
+/* rs600/rs690/rs740 */
+#       define RS600_BUS_MASTER_DIS             (1 << 14)
+#       define RS600_MSI_REARM                  (1 << 20)
+/* see RS400_MSI_REARM in AIC_CNTL for rs480 */
 
 #define RADEON_BUS_CNTL1                0x0034
 #       define RADEON_PMI_BM_DIS                (1 << 2)
@@ -937,7 +937,7 @@ extern int r300_do_cp_cmdbuf(struct drm_device *dev,
 
 #define RADEON_AIC_CNTL                 0x01d0
 #       define RADEON_PCIGART_TRANSLATE_EN      (1 << 0)
-#       define RS480_MSI_REARM                  (1 << 3)
+#       define RS400_MSI_REARM                  (1 << 3)
 #define RADEON_AIC_STAT                 0x01d4
 #define RADEON_AIC_PT_BASE              0x01d8
 #define RADEON_AIC_LO_ADDR              0x01dc