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spi: omap-100k: Rely on validations done by spi core

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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 a few if statements around per transfer bits_per_word
and speed_hz tests as they evaluate always to true.

Also defaulting word_len to 8 is needless since spi_setup() has already
made sure spi->bits_per_word is 8 in case it is not set.

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 16:26:21 +03:00 committed by Mark Brown
parent 6ff33f3902
commit 76f67ea9bf
1 changed files with 8 additions and 18 deletions
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26
drivers/spi/spi-omap-100k.c
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@ -244,12 +244,12 @@ static int omap1_spi100k_setup_transfer(struct spi_device *spi,
{
struct omap1_spi100k *spi100k = spi_master_get_devdata(spi->master);
struct omap1_spi100k_cs *cs = spi->controller_state;
u8 word_len = spi->bits_per_word;
u8 word_len;
if (t != NULL && t->bits_per_word)
if (t != NULL)
word_len = t->bits_per_word;
if (!word_len)
word_len = 8;
else
word_len = spi->bits_per_word;
if (spi->bits_per_word > 32)
return -EINVAL;
@ -302,7 +302,6 @@ static int omap1_spi100k_transfer_one_message(struct spi_master *master,
struct spi_device *spi = m->spi;
struct spi_transfer *t = NULL;
int cs_active = 0;
int par_override = 0;
int status = 0;
list_for_each_entry(t, &m->transfers, transfer_list) {
@ -310,14 +309,9 @@ static int omap1_spi100k_transfer_one_message(struct spi_master *master,
status = -EINVAL;
break;
}
if (par_override || t->speed_hz || t->bits_per_word) {
par_override = 1;
status = omap1_spi100k_setup_transfer(spi, t);
if (status < 0)
break;
if (!t->speed_hz && !t->bits_per_word)
par_override = 0;
}
status = omap1_spi100k_setup_transfer(spi, t);
if (status < 0)
break;
if (!cs_active) {
omap1_spi100k_force_cs(spi100k, 1);
@ -347,11 +341,7 @@ static int omap1_spi100k_transfer_one_message(struct spi_master *master,
}
}
/* Restore defaults if they were overriden */
if (par_override) {
par_override = 0;
status = omap1_spi100k_setup_transfer(spi, NULL);
}
status = omap1_spi100k_setup_transfer(spi, NULL);
if (cs_active)
omap1_spi100k_force_cs(spi100k, 0);