linux-kernel - [PATCH 2/2] iio: sca3000: Handle errors returned by 'sca3000_configure_ring()' in 'sca3000

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Message-Id: <20180402165953.9110-1-christophe.jaillet@wanadoo.fr>
Date:   Mon,  2 Apr 2018 18:59:53 +0200
From:   Christophe JAILLET <christophe.jaillet@...adoo.fr>
To:     jic23@...nel.org, knaack.h@....de, lars@...afoo.de,
        pmeerw@...erw.net, nfarnesi4@...il.com
Cc:     linux-iio@...r.kernel.org, linux-kernel@...r.kernel.org,
        kernel-janitors@...r.kernel.org,
        Christophe JAILLET <christophe.jaillet@...adoo.fr>
Subject: [PATCH 2/2] iio: sca3000: Handle errors returned by 'sca3000_configure_ring()' in 'sca3000_probe()'

'sca3000_configure_ring()' can fail, so test its return value and
propagate it if needed.

Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>
---
Un-tested and not 100% sure that we should bail-out if it fails.
---
 drivers/iio/accel/sca3000.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/iio/accel/sca3000.c b/drivers/iio/accel/sca3000.c
index dae4c594c170..45285edd216f 100644
--- a/drivers/iio/accel/sca3000.c
+++ b/drivers/iio/accel/sca3000.c
@@ -1486,7 +1486,9 @@ static int sca3000_probe(struct spi_device *spi)
 	}
 	indio_dev->modes = INDIO_DIRECT_MODE;
 
-	sca3000_configure_ring(indio_dev);
+	ret = sca3000_configure_ring(indio_dev);
+	if (ret)
+		return ret;
 
 	if (spi->irq) {
 		ret = request_threaded_irq(spi->irq,
-- 
2.14.1