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Subject[PATCH] spi: mediatek: use correct mata->xfer_len when in fifo transfer
Date
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 --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,
--
1.7.9.5
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