[PATCH v2 2/6] staging:iio:ad2s90: Make probe handle spi_setup failure

[Matheus Tavares]

Previously, ad2s90_probe ignored the return code from spi_setup, not
handling its possible failure. This patch makes ad2s90_probe check if
the code is an error code and, if so, do the following:

- Call dev_err with an appropriate error message.
- Return the spi_setup's error code, aborting the execution of the
rest of the function.

Signed-off-by: Matheus Tavares <matheus.bernardino at usp.br>
---
 drivers/staging/iio/resolver/ad2s90.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/staging/iio/resolver/ad2s90.c b/drivers/staging/iio/resolver/ad2s90.c
index 11fac9f90148..d6a42e3f1bd8 100644
--- a/drivers/staging/iio/resolver/ad2s90.c
+++ b/drivers/staging/iio/resolver/ad2s90.c
@@ -88,7 +88,12 @@ static int ad2s90_probe(struct spi_device *spi)
 	/* need 600ns between CS and the first falling edge of SCLK */
 	spi->max_speed_hz = 830000;
 	spi->mode = SPI_MODE_3;
-	spi_setup(spi);
+	ret = spi_setup(spi);
+
+	if (ret < 0) {
+		dev_err(&spi->dev, "spi_setup failed!\n");
+		return ret;
+	}
 
 	return 0;
 }
-- 
2.18.0