1 files changed, 26 insertions, 20 deletions

diff --git a/drivers/gpu/drm/nouveau/core/engine/disp/nv50.c b/drivers/gpu/drm/nouveau/core/engine/disp/nv50.c
index 0f09af13541..ca1a7d76a95 100644
--- a/drivers/gpu/drm/nouveau/core/engine/disp/nv50.c
+++ b/drivers/gpu/drm/nouveau/core/engine/disp/nv50.c
@@ -851,20 +851,23 @@ exec_script(struct nv50_disp_priv *priv, int head, int id)
         for (i = 0; !(ctrl & (1 << head)) && i < 3; i++)
                 ctrl = nv_rd32(priv, 0x610b5c + (i * 8));
 
-        if (nv_device(priv)->chipset  < 0x90 ||
-            nv_device(priv)->chipset == 0x92 ||
-            nv_device(priv)->chipset == 0xa0) {
-                for (i = 0; !(ctrl & (1 << head)) && i < 2; i++)
-                        ctrl = nv_rd32(priv, 0x610b74 + (i * 8));
-                i += 3;
-        } else {
-                for (i = 0; !(ctrl & (1 << head)) && i < 4; i++)
-                        ctrl = nv_rd32(priv, 0x610798 + (i * 8));
-                i += 3;
+        if (!(ctrl & (1 << head))) {
+                if (nv_device(priv)->chipset  < 0x90 ||
+                    nv_device(priv)->chipset == 0x92 ||
+                    nv_device(priv)->chipset == 0xa0) {
+                        for (i = 0; !(ctrl & (1 << head)) && i < 2; i++)
+                                ctrl = nv_rd32(priv, 0x610b74 + (i * 8));
+                        i += 4;
+                } else {
+                        for (i = 0; !(ctrl & (1 << head)) && i < 4; i++)
+                                ctrl = nv_rd32(priv, 0x610798 + (i * 8));
+                        i += 4;
+                }
         }
 
         if (!(ctrl & (1 << head)))
                 return false;
+        i--;
 
         data = exec_lookup(priv, head, i, ctrl, &dcb, &ver, &hdr, &cnt, &len, &info);
         if (data) {
@@ -898,20 +901,23 @@ exec_clkcmp(struct nv50_disp_priv *priv, int head, int id, u32 pclk,
         for (i = 0; !(ctrl & (1 << head)) && i < 3; i++)
                 ctrl = nv_rd32(priv, 0x610b58 + (i * 8));
 
-        if (nv_device(priv)->chipset  < 0x90 ||
-            nv_device(priv)->chipset == 0x92 ||
-            nv_device(priv)->chipset == 0xa0) {
-                for (i = 0; !(ctrl & (1 << head)) && i < 2; i++)
-                        ctrl = nv_rd32(priv, 0x610b70 + (i * 8));
-                i += 3;
-        } else {
-                for (i = 0; !(ctrl & (1 << head)) && i < 4; i++)
-                        ctrl = nv_rd32(priv, 0x610794 + (i * 8));
-                i += 3;
+        if (!(ctrl & (1 << head))) {
+                if (nv_device(priv)->chipset  < 0x90 ||
+                    nv_device(priv)->chipset == 0x92 ||
+                    nv_device(priv)->chipset == 0xa0) {
+                        for (i = 0; !(ctrl & (1 << head)) && i < 2; i++)
+                                ctrl = nv_rd32(priv, 0x610b70 + (i * 8));
+                        i += 4;
+                } else {
+                        for (i = 0; !(ctrl & (1 << head)) && i < 4; i++)
+                                ctrl = nv_rd32(priv, 0x610794 + (i * 8));
+                        i += 4;
+                }
         }
 
         if (!(ctrl & (1 << head)))
                 return 0x0000;
+        i--;
 
         data = exec_lookup(priv, head, i, ctrl, outp, &ver, &hdr, &cnt, &len, &info1);
         if (!data)