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i2c: imx: fix i2c resource leak with dma transfer

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In i2c_imx_dma_xfer(), when dmaengine_submit() returns error,
the context goto label err_submit and then return. However, the
memory allocated for txdesc has not been freed yet, which
leads to resource leak.

Signed-off-by: Gao Pan <b54642@freescale.com>
Signed-off-by: Fugang Duan <B38611@freescale.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
This commit is contained in:
Gao Pan 2016-01-08 13:33:15 +08:00 committed by Wolfram Sang
parent a570a27af4
commit c552815312
1 changed files with 1 additions and 0 deletions
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drivers/i2c/busses/i2c-imx.c
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@ -387,6 +387,7 @@ static int i2c_imx_dma_xfer(struct imx_i2c_struct *i2c_imx,
return 0;
err_submit:
dmaengine_terminate_all(dma->chan_using);
err_desc:
dma_unmap_single(chan_dev, dma->dma_buf,
dma->dma_len, dma->dma_data_dir);