[PATCH 2/2] spi: spi-mt65xx: Rename a variable in interrupt handler

[Fei Shao <fshao@chromium.org>]

All the spi_transfer variables in this file use the name "xfer" except
the one in mtk_spi_interrupt(). Align the naming for consistency and
easier searching.

While at it, reformat one memcpy() usage since the coding style allows
100 column lines today.

This commit has no functional change.

Signed-off-by: Fei Shao <fshao@chromium.org>
---

 drivers/spi/spi-mt65xx.c | 32 +++++++++++++++-----------------
 1 file changed, 15 insertions(+), 17 deletions(-)

diff --git a/drivers/spi/spi-mt65xx.c b/drivers/spi/spi-mt65xx.c
index 86ea822c942b..aaa0006a02a3 100644
--- a/drivers/spi/spi-mt65xx.c
+++ b/drivers/spi/spi-mt65xx.c
@@ -748,7 +748,7 @@ static irqreturn_t mtk_spi_interrupt(int irq, void *dev_id)
 	u32 cmd, reg_val, cnt, remainder, len;
 	struct spi_controller *host = dev_id;
 	struct mtk_spi *mdata = spi_controller_get_devdata(host);
-	struct spi_transfer *trans = mdata->cur_transfer;
+	struct spi_transfer *xfer = mdata->cur_transfer;
 
 	reg_val = readl(mdata->base + SPI_STATUS0_REG);
 	if (reg_val & MTK_SPI_PAUSE_INT_STATUS)
@@ -762,42 +762,40 @@ static irqreturn_t mtk_spi_interrupt(int irq, void *dev_id)
 		return IRQ_HANDLED;
 	}
 
-	if (!host->can_dma(host, NULL, trans)) {
-		if (trans->rx_buf) {
+	if (!host->can_dma(host, NULL, xfer)) {
+		if (xfer->rx_buf) {
 			cnt = mdata->xfer_len / 4;
 			ioread32_rep(mdata->base + SPI_RX_DATA_REG,
-				     trans->rx_buf + mdata->num_xfered, cnt);
+				     xfer->rx_buf + mdata->num_xfered, cnt);
 			remainder = mdata->xfer_len % 4;
 			if (remainder > 0) {
 				reg_val = readl(mdata->base + SPI_RX_DATA_REG);
-				memcpy(trans->rx_buf +
-					mdata->num_xfered +
-					(cnt * 4),
+				memcpy(xfer->rx_buf + (cnt * 4) + mdata->num_xfered,
 					&reg_val,
 					remainder);
 			}
 		}
 
 		mdata->num_xfered += mdata->xfer_len;
-		if (mdata->num_xfered == trans->len) {
+		if (mdata->num_xfered == xfer->len) {
 			spi_finalize_current_transfer(host);
 			return IRQ_HANDLED;
 		}
 
-		len = trans->len - mdata->num_xfered;
+		len = xfer->len - mdata->num_xfered;
 		mdata->xfer_len = min(MTK_SPI_MAX_FIFO_SIZE, len);
 		mtk_spi_setup_packet(host);
 
-		if (trans->tx_buf) {
+		if (xfer->tx_buf) {
 			cnt = mdata->xfer_len / 4;
 			iowrite32_rep(mdata->base + SPI_TX_DATA_REG,
-					trans->tx_buf + mdata->num_xfered, cnt);
+					xfer->tx_buf + mdata->num_xfered, cnt);
 
 			remainder = mdata->xfer_len % 4;
 			if (remainder > 0) {
 				reg_val = 0;
 				memcpy(&reg_val,
-					trans->tx_buf + (cnt * 4) + mdata->num_xfered,
+					xfer->tx_buf + (cnt * 4) + mdata->num_xfered,
 					remainder);
 				writel(reg_val, mdata->base + SPI_TX_DATA_REG);
 		}
@@ -808,21 +806,21 @@ static irqreturn_t mtk_spi_interrupt(int irq, void *dev_id)
 	}
 
 	if (mdata->tx_sgl)
-		trans->tx_dma += mdata->xfer_len;
+		xfer->tx_dma += mdata->xfer_len;
 	if (mdata->rx_sgl)
-		trans->rx_dma += mdata->xfer_len;
+		xfer->rx_dma += mdata->xfer_len;
 
 	if (mdata->tx_sgl && (mdata->tx_sgl_len == 0)) {
 		mdata->tx_sgl = sg_next(mdata->tx_sgl);
 		if (mdata->tx_sgl) {
-			trans->tx_dma = sg_dma_address(mdata->tx_sgl);
+			xfer->tx_dma = sg_dma_address(mdata->tx_sgl);
 			mdata->tx_sgl_len = sg_dma_len(mdata->tx_sgl);
 		}
 	}
 	if (mdata->rx_sgl && (mdata->rx_sgl_len == 0)) {
 		mdata->rx_sgl = sg_next(mdata->rx_sgl);
 		if (mdata->rx_sgl) {
-			trans->rx_dma = sg_dma_address(mdata->rx_sgl);
+			xfer->rx_dma = sg_dma_address(mdata->rx_sgl);
 			mdata->rx_sgl_len = sg_dma_len(mdata->rx_sgl);
 		}
 	}
@@ -840,7 +838,7 @@ static irqreturn_t mtk_spi_interrupt(int irq, void *dev_id)
 
 	mtk_spi_update_mdata_len(host);
 	mtk_spi_setup_packet(host);
-	mtk_spi_setup_dma_addr(host, trans);
+	mtk_spi_setup_dma_addr(host, xfer);
 	mtk_spi_enable_transfer(host);
 
 	return IRQ_HANDLED;
-- 
2.44.0.396.g6e790dbe36-goog