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spi: dw: Remove needless if statements

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SPI core validates both bits_per_word and speed_hz transfer parameters and
defaults to spi->bits_per_word and spi->max_speed_hz in case these per
transfer parameters are not set. This allows to remove related if
statements as they evaluate always to true and reduce indentation.

Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Jarkko Nikula 2015-09-15 16:26:23 +03:00 committed by Mark Brown
parent 6ff33f3902
commit 0ed36990a9
1 changed files with 18 additions and 23 deletions
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41
drivers/spi/spi-dw.c
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@ -309,34 +309,29 @@ static int dw_spi_transfer_one(struct spi_master *master,
cr0 = chip->cr0;
/* Handle per transfer options for bpw and speed */
if (transfer->speed_hz) {
speed = chip->speed_hz;
speed = chip->speed_hz;
if ((transfer->speed_hz != speed) || !chip->clk_div) {
speed = transfer->speed_hz;
if ((transfer->speed_hz != speed) || !chip->clk_div) {
speed = transfer->speed_hz;
/* clk_div doesn't support odd number */
clk_div = (dws->max_freq / speed + 1) & 0xfffe;
/* clk_div doesn't support odd number */
clk_div = (dws->max_freq / speed + 1) & 0xfffe;
chip->speed_hz = speed;
chip->clk_div = clk_div;
chip->speed_hz = speed;
chip->clk_div = clk_div;
spi_set_clk(dws, chip->clk_div);
}
spi_set_clk(dws, chip->clk_div);
}
if (transfer->bits_per_word) {
if (transfer->bits_per_word == 8) {
dws->n_bytes = 1;
dws->dma_width = 1;
} else if (transfer->bits_per_word == 16) {
dws->n_bytes = 2;
dws->dma_width = 2;
}
cr0 = (transfer->bits_per_word - 1)
| (chip->type << SPI_FRF_OFFSET)
| (spi->mode << SPI_MODE_OFFSET)
| (chip->tmode << SPI_TMOD_OFFSET);
if (transfer->bits_per_word == 8) {
dws->n_bytes = 1;
dws->dma_width = 1;
} else if (transfer->bits_per_word == 16) {
dws->n_bytes = 2;
dws->dma_width = 2;
}
cr0 = (transfer->bits_per_word - 1)
| (chip->type << SPI_FRF_OFFSET)
| (spi->mode << SPI_MODE_OFFSET)
| (chip->tmode << SPI_TMOD_OFFSET);
/*
* Adjust transfer mode if necessary. Requires platform dependent