If a valid GPIO is specified but cannot be requested by the driver, print a
message and error out of omap2_mcspi_setup.
Signed-off-by: Michael Welling <mwell...@ieee.org>
---
drivers/spi/spi-omap2-mcspi.c | 9 ++++++---
1 file changed, 6 insertions(+), 3 deletions(-)
diff --git a/drivers/spi/spi-omap2-mcspi.c b/drivers/spi/spi-omap2-mcspi.c
index c4e21ad..5867384 100644
--- a/drivers/spi/spi-omap2-mcspi.c
+++ b/drivers/spi/spi-omap2-mcspi.c
@@ -1023,9 +1023,12 @@ static int omap2_mcspi_setup(struct spi_device *spi)
}
if (gpio_is_valid(spi->cs_gpio)) {
- if (gpio_request(spi->cs_gpio, dev_name(&spi->dev)) == 0)
- gpio_direction_output(spi->cs_gpio,
- !(spi->mode & SPI_CS_HIGH));
+ ret = gpio_request(spi->cs_gpio, dev_name(&spi->dev));
+ if (ret) {
+ dev_err(&spi->dev, "failed to request gpio\n");
+ return ret;
+ }
+ gpio_direction_output(spi->cs_gpio, !(spi->mode & SPI_CS_HIGH));
}
ret = pm_runtime_get_sync(mcspi->dev);
--
1.7.9.5
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