diff --git a/usr/src/uts/common/io/mlxcx/mlxcx.c b/usr/src/uts/common/io/mlxcx/mlxcx.c
index f8effecbfd80..4f0e3f47bc8d 100644
--- a/usr/src/uts/common/io/mlxcx/mlxcx.c
+++ b/usr/src/uts/common/io/mlxcx/mlxcx.c
@@ -650,61 +650,6 @@ mlxcx_panic(mlxcx_t *mlxp, const char *fmt, ...)
 	va_end(ap);
 }
 
-uint16_t
-mlxcx_get16(mlxcx_t *mlxp, uintptr_t off)
-{
-	uintptr_t addr = off + (uintptr_t)mlxp->mlx_regs_base;
-	return (ddi_get16(mlxp->mlx_regs_handle, (void *)addr));
-}
-
-uint32_t
-mlxcx_get32(mlxcx_t *mlxp, uintptr_t off)
-{
-	uintptr_t addr = off + (uintptr_t)mlxp->mlx_regs_base;
-	return (ddi_get32(mlxp->mlx_regs_handle, (void *)addr));
-}
-
-uint64_t
-mlxcx_get64(mlxcx_t *mlxp, uintptr_t off)
-{
-	uintptr_t addr = off + (uintptr_t)mlxp->mlx_regs_base;
-	return (ddi_get64(mlxp->mlx_regs_handle, (void *)addr));
-}
-
-void
-mlxcx_put32(mlxcx_t *mlxp, uintptr_t off, uint32_t val)
-{
-	uintptr_t addr = off + (uintptr_t)mlxp->mlx_regs_base;
-	ddi_put32(mlxp->mlx_regs_handle, (void *)addr, val);
-}
-
-void
-mlxcx_put64(mlxcx_t *mlxp, uintptr_t off, uint64_t val)
-{
-	uintptr_t addr = off + (uintptr_t)mlxp->mlx_regs_base;
-	ddi_put64(mlxp->mlx_regs_handle, (void *)addr, val);
-}
-
-void
-mlxcx_uar_put32(mlxcx_t *mlxp, mlxcx_uar_t *mlu, uintptr_t off, uint32_t val)
-{
-	/*
-	 * The UAR is always inside the first BAR, which we mapped as
-	 * mlx_regs
-	 */
-	uintptr_t addr = off + (uintptr_t)mlu->mlu_base +
-	    (uintptr_t)mlxp->mlx_regs_base;
-	ddi_put32(mlxp->mlx_regs_handle, (void *)addr, val);
-}
-
-void
-mlxcx_uar_put64(mlxcx_t *mlxp, mlxcx_uar_t *mlu, uintptr_t off, uint64_t val)
-{
-	uintptr_t addr = off + (uintptr_t)mlu->mlu_base +
-	    (uintptr_t)mlxp->mlx_regs_base;
-	ddi_put64(mlxp->mlx_regs_handle, (void *)addr, val);
-}
-
 static void
 mlxcx_fm_fini(mlxcx_t *mlxp)
 {
diff --git a/usr/src/uts/common/io/mlxcx/mlxcx.h b/usr/src/uts/common/io/mlxcx/mlxcx.h
index c8896f22f15d..43be3603fe8a 100644
--- a/usr/src/uts/common/io/mlxcx/mlxcx.h
+++ b/usr/src/uts/common/io/mlxcx/mlxcx.h
@@ -1239,17 +1239,62 @@ struct mlxcx {
 };
 
 /*
- * Register access
+ * Register access.  Use static inlines.
  */
-extern uint16_t mlxcx_get16(mlxcx_t *, uintptr_t);
-extern uint32_t mlxcx_get32(mlxcx_t *, uintptr_t);
-extern uint64_t mlxcx_get64(mlxcx_t *, uintptr_t);
+static inline uint16_t
+mlxcx_get16(mlxcx_t *mlxp, uintptr_t off)
+{
+	uintptr_t addr = off + (uintptr_t)mlxp->mlx_regs_base;
+	return (ddi_get16(mlxp->mlx_regs_handle, (void *)addr));
+}
+
+static inline uint32_t
+mlxcx_get32(mlxcx_t *mlxp, uintptr_t off)
+{
+	uintptr_t addr = off + (uintptr_t)mlxp->mlx_regs_base;
+	return (ddi_get32(mlxp->mlx_regs_handle, (void *)addr));
+}
+
+static inline uint64_t
+mlxcx_get64(mlxcx_t *mlxp, uintptr_t off)
+{
+	uintptr_t addr = off + (uintptr_t)mlxp->mlx_regs_base;
+	return (ddi_get64(mlxp->mlx_regs_handle, (void *)addr));
+}
+
+static inline void
+mlxcx_put32(mlxcx_t *mlxp, uintptr_t off, uint32_t val)
+{
+	uintptr_t addr = off + (uintptr_t)mlxp->mlx_regs_base;
+	ddi_put32(mlxp->mlx_regs_handle, (void *)addr, val);
+}
 
-extern void mlxcx_put32(mlxcx_t *, uintptr_t, uint32_t);
-extern void mlxcx_put64(mlxcx_t *, uintptr_t, uint64_t);
+static inline void
+mlxcx_put64(mlxcx_t *mlxp, uintptr_t off, uint64_t val)
+{
+	uintptr_t addr = off + (uintptr_t)mlxp->mlx_regs_base;
+	ddi_put64(mlxp->mlx_regs_handle, (void *)addr, val);
+}
+
+static inline void
+mlxcx_uar_put32(mlxcx_t *mlxp, mlxcx_uar_t *mlu, uintptr_t off, uint32_t val)
+{
+	/*
+	 * The UAR is always inside the first BAR, which we mapped as
+	 * mlx_regs
+	 */
+	uintptr_t addr = off + (uintptr_t)mlu->mlu_base +
+	    (uintptr_t)mlxp->mlx_regs_base;
+	ddi_put32(mlxp->mlx_regs_handle, (void *)addr, val);
+}
 
-extern void mlxcx_uar_put32(mlxcx_t *, mlxcx_uar_t *, uintptr_t, uint32_t);
-extern void mlxcx_uar_put64(mlxcx_t *, mlxcx_uar_t *, uintptr_t, uint64_t);
+static inline void
+mlxcx_uar_put64(mlxcx_t *mlxp, mlxcx_uar_t *mlu, uintptr_t off, uint64_t val)
+{
+	uintptr_t addr = off + (uintptr_t)mlu->mlu_base +
+	    (uintptr_t)mlxp->mlx_regs_base;
+	ddi_put64(mlxp->mlx_regs_handle, (void *)addr, val);
+}
 
 /*
  * Logging functions.