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>

diff --git a/drivers/spi/spi-xilinx.c b/drivers/spi/spi-xilinx.c
index 6ce1066..8ed306e 100644 (file)
--- 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;
 }