linux-kernel - [PATCH] misc: lis3lv02d: use spi_write_then_read() instead of spi

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Date:   Fri,  9 Dec 2016 11:37:33 +0100
From:   Marcus Folkesson <marcus.folkesson@...il.com>
To:     Eric Piel <eric.piel@...mplin-utc.net>
Cc:     linux-kernel@...r.kernel.org,
        Marcus Folkesson <marcus.folkesson@...il.com>
Subject: [PATCH] misc: lis3lv02d: use spi_write_then_read() instead of spi_write()

spi_write() needs a DMA-safe buffer.

Signed-off-by: Marcus Folkesson <marcus.folkesson@...il.com>
---
 drivers/misc/lis3lv02d/lis3lv02d_spi.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/misc/lis3lv02d/lis3lv02d_spi.c b/drivers/misc/lis3lv02d/lis3lv02d_spi.c
index e575475123c8..7e592df6f0d2 100644
--- a/drivers/misc/lis3lv02d/lis3lv02d_spi.c
+++ b/drivers/misc/lis3lv02d/lis3lv02d_spi.c
@@ -40,7 +40,7 @@ static int lis3_spi_write(struct lis3lv02d *lis3, int reg, u8 val)
 {
 	u8 tmp[2] = { reg, val };
 	struct spi_device *spi = lis3->bus_priv;
-	return spi_write(spi, tmp, sizeof(tmp));
+	return spi_write_then_read(spi, tmp, sizeof(tmp), NULL, 0);
 }
 
 static int lis3_spi_init(struct lis3lv02d *lis3)
-- 
2.11.0.rc2