drm/nouveau/clk/gk20a: properly protect macro argument

Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drivers/gpu/drm/nouveau/nvkm/subdev/clk/gk20a.c

@@ -31,7 +31,7 @@
 #define KHZ (1000)
 #define MHZ (KHZ * 1000)
 
-#define MASK(w)	((1 << w) - 1)
+#define MASK(w)	((1 << (w)) - 1)
 
 #define GPCPLL_CFG		(SYS_GPCPLL_CFG_BASE + 0)
 #define GPCPLL_CFG_ENABLE	BIT(0)

drivers/gpu/drm/nouveau/nvkm/subdev/clk/gm20b.c

@@ -29,7 +29,7 @@
 #define KHZ (1000)
 #define MHZ (KHZ * 1000)
 
-#define MASK(w)	((1 << w) - 1)
+#define MASK(w)	((1 << (w)) - 1)
 
 #define BYPASSCTRL_SYS	(SYS_GPCPLL_CFG_BASE + 0x340)
 #define BYPASSCTRL_SYS_GPCPLL_SHIFT	0