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i2c: rcar: cleanup DMA for all kinds of failure

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[ Upstream commit 31d86033a0749a0463ea654130b2de5c163154f1 ]

DMA needs to be cleaned up not only on timeout, but on all errors where
it has been setup before.

Fixes: 73e8b05283 ("i2c: rcar: add DMA support")
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Wolfram Sang 2018-10-19 21:15:26 +02:00 • committed by Greg Kroah-Hartman
parent d38bd3e9a8
commit 8b110ef876
1 changed files with 5 additions and 1 deletions
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6
drivers/i2c/busses/i2c-rcar.c
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@ -723,8 +723,12 @@ 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) {