diff --git a/drivers/staging/sm750fb/ddk750_power.c b/drivers/staging/sm750fb/ddk750_power.c
index eaba3bc2e01a..cd63f43283f7 100644
--- a/drivers/staging/sm750fb/ddk750_power.c
+++ b/drivers/staging/sm750fb/ddk750_power.c
@@ -96,20 +96,6 @@ void sm750_enable_2d_engine(unsigned int enable)
 	sm750_set_current_gate(gate);
 }
 
-void sm750_enable_dma(unsigned int enable)
-{
-	u32 gate;
-
-	/* Enable DMA Gate */
-	gate = peek32(CURRENT_GATE);
-	if (enable)
-		gate |= CURRENT_GATE_DMA;
-	else
-		gate &= ~CURRENT_GATE_DMA;
-
-	sm750_set_current_gate(gate);
-}
-
 /*
  * This function enable/disable the GPIO Engine
  */
diff --git a/drivers/staging/sm750fb/ddk750_power.h b/drivers/staging/sm750fb/ddk750_power.h
index 1c4f054d7276..0c4ab2120385 100644
--- a/drivers/staging/sm750fb/ddk750_power.h
+++ b/drivers/staging/sm750fb/ddk750_power.h
@@ -23,11 +23,6 @@ void sm750_set_current_gate(unsigned int gate);
  */
 void sm750_enable_2d_engine(unsigned int enable);
 
-/*
- * This function enable/disable the DMA Engine
- */
-void sm750_enable_dma(unsigned int enable);
-
 /*
  * This function enable/disable the GPIO Engine
  */