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i2c: imx: fix i2c resource leak with dma transfer
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>
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@ -387,6 +387,7 @@ static int i2c_imx_dma_xfer(struct imx_i2c_struct *i2c_imx,
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return 0;
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err_submit:
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dmaengine_terminate_all(dma->chan_using);
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err_desc:
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dma_unmap_single(chan_dev, dma->dma_buf,
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dma->dma_len, dma->dma_data_dir);
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