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authorWolfram Sang <wsa+renesas@sang-engineering.com>2018-10-19 21:15:26 +0200
committerWolfram Sang <wsa@the-dreams.de>2018-10-20 15:25:59 +0200
commit31d86033a0749a0463ea654130b2de5c163154f1 (patch)
tree7389ea1d3cfd365ee474d4b0d2921434ac3b81fa /drivers/i2c
parent72a7a4aa77a05876e83f587f4cbe1e00ddc5ede1 (diff)
downloadlinux-31d86033a0749a0463ea654130b2de5c163154f1.tar.bz2
i2c: rcar: cleanup DMA for all kinds of failure
DMA needs to be cleaned up not only on timeout, but on all errors where it has been setup before. Fixes: 73e8b0528346 ("i2c: rcar: add DMA support") Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Diffstat (limited to 'drivers/i2c')
-rw-r--r--drivers/i2c/busses/i2c-rcar.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/i2c/busses/i2c-rcar.c b/drivers/i2c/busses/i2c-rcar.c
index 52cf42b32f0a..4aa7dde876f3 100644
--- a/drivers/i2c/busses/i2c-rcar.c
+++ b/drivers/i2c/busses/i2c-rcar.c
@@ -806,8 +806,12 @@ static int rcar_i2c_master_xfer(struct i2c_adapter *adap,
time_left = wait_event_timeout(priv->wait, priv->flags & ID_DONE,
num * adap->timeout);
- if (!time_left) {
+
+ /* cleanup DMA if it couldn't complete properly due to an error */
+ if (priv->dma_direction != DMA_NONE)
rcar_i2c_cleanup_dma(priv);
+
+ if (!time_left) {
rcar_i2c_init(priv);
ret = -ETIMEDOUT;
} else if (priv->flags & ID_NACK) {