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| author | Josef Ahmad <josef.ahmad@intel.com> | 2013-04-09 18:25:34 +0100 |
|---|---|---|
| committer | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2013-04-10 14:47:09 +0100 |
| commit | 6b8cc3306e78490bda26815b04c786d8e1fc1489 (patch) | |
| tree | 136d5f59d73c5bf51c152fb3aa4af0ee1514e7c7 /drivers/spi/spi-gpio.c | |
| parent | c3e2aa861005ec390e8a7556d1a1e980be1a6e1f (diff) | |
| download | linux-6b8cc3306e78490bda26815b04c786d8e1fc1489.tar.gz linux-6b8cc3306e78490bda26815b04c786d8e1fc1489.tar.bz2 linux-6b8cc3306e78490bda26815b04c786d8e1fc1489.zip | |
spi-gpio: init CS before spi_bitbang_setup()
spi_bitbang_setup() deasserts the chip select line to initialise
the device. The chip select GPIO line is obtained from
spi_gpio->cs_gpios[] private data.
Currently, devices that are not registered under devicetree
environment will call into spi_bitbang_setup() with stale
cs_gpios[].
This patch ensures spi_gpio->cs_gpios[] is always initialised prior
to calling spi_bitbang_setup().
Reviewed-by: Daniel Mack <zonque@gmail.com>
Signed-off-by: Josef Ahmad <josef.ahmad@intel.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'drivers/spi/spi-gpio.c')
| -rw-r--r-- | drivers/spi/spi-gpio.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/spi/spi-gpio.c b/drivers/spi/spi-gpio.c index 9ddef55a7165..0021fc4c45bc 100644 --- a/drivers/spi/spi-gpio.c +++ b/drivers/spi/spi-gpio.c @@ -265,9 +265,9 @@ static int spi_gpio_setup(struct spi_device *spi) } } if (!status) { - status = spi_bitbang_setup(spi); /* in case it was initialized from static board data */ spi_gpio->cs_gpios[spi->chip_select] = cs; + status = spi_bitbang_setup(spi); } if (status) { |