diff options
| author | Leilk Liu <leilk.liu@mediatek.com> | 2018-10-31 16:49:16 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-11-24 08:22:43 +0100 |
| commit | 723aef6434dd82e8b4ded65eabafccab9174c5fc (patch) | |
| tree | 6b9f3e28a869fd91b806c47ed22a3654e9e49e07 /drivers | |
| parent | f56f3d0e65adb447b8b583c8ed4fbbe544c9bfde (diff) | |
spi: mediatek: use correct mata->xfer_len when in fifo transfer
commit a4d8f64f7267a88d4688f5c216926f5f6cafbae6 upstream.
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>
Signed-off-by: Mark Brown <broonie@kernel.org>
Cc: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/spi/spi-mt65xx.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/spi/spi-mt65xx.c b/drivers/spi/spi-mt65xx.c index 3dc31627c655..0c2867deb36f 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(®_val, |