diff options
| author | Stefan Sørensen <stefan.sorensen@spectralink.com> | 2014-02-02 16:24:12 +0100 |
|---|---|---|
| committer | Mark Brown <broonie@linaro.org> | 2014-02-03 18:25:48 +0000 |
| commit | 2bd16e3e23d9df41592c6b257c59b6860a9cc3ea (patch) | |
| tree | 17aac9813e1eefefe83a5b30038dd525f93fe1e1 /drivers/spi/spi-omap2-mcspi.c | |
| parent | 38dbfb59d1175ef458d006556061adeaa8751b72 (diff) | |
| download | lwn-2bd16e3e23d9df41592c6b257c59b6860a9cc3ea.tar.gz lwn-2bd16e3e23d9df41592c6b257c59b6860a9cc3ea.zip | |
spi: omap2-mcspi: Do not configure the controller on each transfer unless needed
spi_transfer->speed_hz and spi_transfer->bits_per_word used to only be set when
not using the default settings but are not set on every transfer, causing
omap2_mcspi_setup_transfer to be called on each transfer. This patch changes
the check to only call omap2_mcspi_setup_transfer if the settings needs to be
changed.
Signed-off-by: Stefan Sørensen <stefan.sorensen@spectralink.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
Diffstat (limited to 'drivers/spi/spi-omap2-mcspi.c')
| -rw-r--r-- | drivers/spi/spi-omap2-mcspi.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/drivers/spi/spi-omap2-mcspi.c b/drivers/spi/spi-omap2-mcspi.c index a72127f08e39..965539b0dbfb 100644 --- a/drivers/spi/spi-omap2-mcspi.c +++ b/drivers/spi/spi-omap2-mcspi.c @@ -1057,12 +1057,15 @@ static void omap2_mcspi_work(struct omap2_mcspi *mcspi, struct spi_message *m) status = -EINVAL; break; } - if (par_override || t->speed_hz || t->bits_per_word) { + if (par_override || + (t->speed_hz != spi->max_speed_hz) || + (t->bits_per_word != spi->bits_per_word)) { par_override = 1; status = omap2_mcspi_setup_transfer(spi, t); if (status < 0) break; - if (!t->speed_hz && !t->bits_per_word) + if (t->speed_hz == spi->max_speed_hz && + t->bits_per_word == spi->bits_per_word) par_override = 0; } if (cd && cd->cs_per_word) { |