diff mbox series

spi: mediatek: use correct mata->xfer_len when in fifo transfer

Message ID 1540975756-2021-1-git-send-email-leilk.liu@mediatek.com (mailing list archive)
State Accepted
Commit a4d8f64f7267a88d4688f5c216926f5f6cafbae6
Headers show
Series spi: mediatek: use correct mata->xfer_len when in fifo transfer | expand

Commit Message

Leilk Liu Oct. 31, 2018, 8:49 a.m. UTC 
when xfer_len is greater than 64 bytes and use fifo mode
to transfer, the actual length from the third time is mata->xfer_len
but not len in mtk_spi_interrupt().

Signed-off-by: Leilk Liu <leilk.liu@mediatek.com>
---
 drivers/spi/spi-mt65xx.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/drivers/spi/spi-mt65xx.c b/drivers/spi/spi-mt65xx.c
index 3dc3162..0c2867d 100644
--- a/drivers/spi/spi-mt65xx.c
+++ b/drivers/spi/spi-mt65xx.c
@@ -522,11 +522,11 @@  static irqreturn_t mtk_spi_interrupt(int irq, void *dev_id)
 		mdata->xfer_len = min(MTK_SPI_MAX_FIFO_SIZE, len);
 		mtk_spi_setup_packet(master);
 
-		cnt = len / 4;
+		cnt = mdata->xfer_len / 4;
 		iowrite32_rep(mdata->base + SPI_TX_DATA_REG,
 				trans->tx_buf + mdata->num_xfered, cnt);
 
-		remainder = len % 4;
+		remainder = mdata->xfer_len % 4;
 		if (remainder > 0) {
 			reg_val = 0;
 			memcpy(&reg_val,