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authorWolfram Sang <wsa+renesas@sang-engineering.com>2017-05-28 10:52:17 +0300
committerWolfram Sang <wsa@the-dreams.de>2017-06-15 16:51:44 +0300
commit916335036d4fe33f9806240cb0d1900f4975b959 (patch)
treee8908263e64d2fe4564b5293711745f9f04a31db /drivers/i2c/busses/i2c-rcar.c
parent32c1431eea4881a6b17bd7c639315010aeefa452 (diff)
downloadlinux-916335036d4fe33f9806240cb0d1900f4975b959.tar.xz
i2c: rcar: use correct length when unmapping DMA
Because we need to transfer some bytes with PIO, the msg length is not the length of the DMA buffer. Use the correct value which we used when doing the mapping. Fixes: 73e8b0528346e8 ("i2c: rcar: add DMA support") Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Diffstat (limited to 'drivers/i2c/busses/i2c-rcar.c')
-rw-r--r--drivers/i2c/busses/i2c-rcar.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/i2c/busses/i2c-rcar.c b/drivers/i2c/busses/i2c-rcar.c
index 214bf2835d1f..8be3e6cb8fe6 100644
--- a/drivers/i2c/busses/i2c-rcar.c
+++ b/drivers/i2c/busses/i2c-rcar.c
@@ -319,7 +319,7 @@ static void rcar_i2c_dma_unmap(struct rcar_i2c_priv *priv)
rcar_i2c_write(priv, ICFBSCR, TCYC06);
dma_unmap_single(chan->device->dev, sg_dma_address(&priv->sg),
- priv->msg->len, priv->dma_direction);
+ sg_dma_len(&priv->sg), priv->dma_direction);
priv->dma_direction = DMA_NONE;
}