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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>
This commit is contained in:
Ricardo Ribalda Delgado 2015-01-28 13:23:49 +01:00 committed by Mark Brown
parent c30929415a
commit d79b2d073a
1 changed files with 6 additions and 7 deletions
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13
drivers/spi/spi-xilinx.c
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@ -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;
}