dmaengine: stm32-dma: fix typo and reported checkpatch warnings

Fix typo in a comment and solved reported checkpatch warnings.
Signed-off-by: Pierre-Yves MORDRET <pierre-yves.mordret@st.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>

drivers/dma/stm32-dma.c

@@ -60,7 +60,8 @@
 #define STM32_DMA_SCR_PINC		BIT(9) /* Peripheral increment mode */
 #define STM32_DMA_SCR_CIRC		BIT(8) /* Circular mode */
 #define STM32_DMA_SCR_PFCTRL		BIT(5) /* Peripheral Flow Controller */
-#define STM32_DMA_SCR_TCIE		BIT(4) /* Transfer Cplete Int Enable*/
+#define STM32_DMA_SCR_TCIE		BIT(4) /* Transfer Complete Int Enable
+						*/
 #define STM32_DMA_SCR_TEIE		BIT(2) /* Transfer Error Int Enable */
 #define STM32_DMA_SCR_DMEIE		BIT(1) /* Direct Mode Err Int Enable */
 #define STM32_DMA_SCR_EN		BIT(0) /* Stream Enable */
@@ -918,7 +919,7 @@ static enum dma_status stm32_dma_tx_status(struct dma_chan *c,
 	u32 residue = 0;
 
 	status = dma_cookie_status(c, cookie, state);
-	if ((status == DMA_COMPLETE) || (!state))
+	if (status == DMA_COMPLETE || !state)
 		return status;
 
 	spin_lock_irqsave(&chan->vchan.lock, flags);
@@ -1015,8 +1016,8 @@ static struct dma_chan *stm32_dma_of_xlate(struct of_phandle_args *dma_spec,
 	cfg.stream_config = dma_spec->args[2];
 	cfg.features = dma_spec->args[3];
 
-	if ((cfg.channel_id >= STM32_DMA_MAX_CHANNELS) ||
-	    (cfg.request_line >= STM32_DMA_MAX_REQUEST_ID)) {
+	if (cfg.channel_id >= STM32_DMA_MAX_CHANNELS ||
+	    cfg.request_line >= STM32_DMA_MAX_REQUEST_ID) {
 		dev_err(dev, "Bad channel and/or request id\n");
 		return NULL;
 	}