From: Marcus Folkesson <marcus.folkesson@gmail.com>
To: Jonathan Cameron <jic23@kernel.org>,
Hartmut Knaack <knaack.h@gmx.de>,
Lars-Peter Clausen <lars@metafoo.de>,
Peter Meerwald-Stadler <pmeerw@pmeerw.net>,
Matt Ranostay <mranostay@gmail.com>,
Sandhya Bankar <bankarsandhya512@gmail.com>
Cc: linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org,
Marcus Folkesson <marcus.folkesson@gmail.com>
Subject: [PATCH] iio: adc: max1027: allocate DMA-safe buffer
Date: Fri, 9 Dec 2016 11:24:35 +0100 [thread overview]
Message-ID: <20161209102435.30638-1-marcus.folkesson@gmail.com> (raw)
The buffer needs to be DMA-safe when used with spi_read()
Signed-off-by: Marcus Folkesson <marcus.folkesson@gmail.com>
---
drivers/iio/adc/max1027.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/iio/adc/max1027.c b/drivers/iio/adc/max1027.c
index 712fbd2b1f16..ff1f1f15a873 100644
--- a/drivers/iio/adc/max1027.c
+++ b/drivers/iio/adc/max1027.c
@@ -435,7 +435,7 @@ static int max1027_probe(struct spi_device *spi)
st->buffer = devm_kmalloc(&indio_dev->dev,
indio_dev->num_channels * 2,
- GFP_KERNEL);
+ GFP_KERNEL | GFP_DMA);
if (st->buffer == NULL) {
dev_err(&indio_dev->dev, "Can't allocate buffer\n");
return -ENOMEM;
--
2.11.0.rc2
next reply other threads:[~2016-12-09 10:30 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-12-09 10:24 Marcus Folkesson [this message]
2016-12-10 17:36 ` [PATCH] iio: adc: max1027: allocate DMA-safe buffer Jonathan Cameron
2016-12-10 20:53 ` Marcus Folkesson
2016-12-11 15:07 ` Jonathan Cameron
2016-12-12 17:31 ` Lars-Peter Clausen
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