renegade-project/linux-next
2
0
Fork 0
mirror of https://github.com/edk2-porting/linux-next.git synced 2024-12-15 08:44:14 +08:00
Code

spi-gpio: init CS before spi_bitbang_setup()

Browse Source 
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>
This commit is contained in:
Josef Ahmad 2013-04-09 18:25:34 +01:00 committed by Mark Brown
parent c3e2aa8610
commit 6b8cc3306e
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/spi/spi-gpio.c
View File

@ -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) {