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author | Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com> | 2015-01-28 13:23:49 +0100 |
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committer | Mark Brown <broonie@kernel.org> | 2015-01-28 19:42:43 +0000 |
commit | d79b2d073ae4eeb79ce1aa27c96fe9e3f7582e97 (patch) | |
tree | 092094893ad3a835448691dc5cb5288c9de51ee3 | |
parent | c30929415a3d7f186da888d322f93150af308287 (diff) | |
download | op-kernel-dev-d79b2d073ae4eeb79ce1aa27c96fe9e3f7582e97.zip op-kernel-dev-d79b2d073ae4eeb79ce1aa27c96fe9e3f7582e97.tar.gz |
spi/xilinx: Convert remainding_bytes in remaining words
Simplify the code by using the unit used on most of the code logic.
Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
-rw-r--r-- | drivers/spi/spi-xilinx.c | 13 |
1 files changed, 6 insertions, 7 deletions
diff --git a/drivers/spi/spi-xilinx.c b/drivers/spi/spi-xilinx.c index 6ce1066..8ed306e 100644 --- a/drivers/spi/spi-xilinx.c +++ b/drivers/spi/spi-xilinx.c @@ -86,7 +86,7 @@ struct xilinx_spi { u8 *rx_ptr; /* pointer in the Tx buffer */ const u8 *tx_ptr; /* pointer in the Rx buffer */ - int remaining_bytes; /* the number of bytes left to transfer */ + int remaining_words; /* the number of words left to transfer */ u8 bits_per_word; int buffer_size; /* buffer size in words */ u32 cs_inactive; /* Level of the CS pins when inactive*/ @@ -231,7 +231,7 @@ static int xilinx_spi_setup_transfer(struct spi_device *spi, static void xilinx_spi_fill_tx_fifo(struct xilinx_spi *xspi, int n_words) { - xspi->remaining_bytes -= n_words * xspi->bits_per_word / 8; + xspi->remaining_words -= n_words; while (n_words--) xilinx_spi_tx(xspi); @@ -246,15 +246,14 @@ static int xilinx_spi_txrx_bufs(struct spi_device *spi, struct spi_transfer *t) xspi->tx_ptr = t->tx_buf; xspi->rx_ptr = t->rx_buf; - xspi->remaining_bytes = t->len; + xspi->remaining_words = (t->len * 8) / xspi->bits_per_word; reinit_completion(&xspi->done); - while (xspi->remaining_bytes) { + while (xspi->remaining_words) { u16 cr = 0; int n_words; - n_words = (xspi->remaining_bytes * 8) / xspi->bits_per_word; - n_words = min(n_words, xspi->buffer_size); + n_words = min(xspi->remaining_words, xspi->buffer_size); xilinx_spi_fill_tx_fifo(xspi, n_words); @@ -286,7 +285,7 @@ static int xilinx_spi_txrx_bufs(struct spi_device *spi, struct spi_transfer *t) xilinx_spi_rx(xspi); } - return t->len - xspi->remaining_bytes; + return t->len; } |