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i2c: mxs: Handle i2c DMA failure properly 

Properly terminate the DMA transfer in case the DMA PIO transfer
or setup fails for any reason.

Signed-off-by: Marek Vasut <marex@denx.de>
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
This commit is contained in:
Marek Vasut 2012-11-18 06:25:07 +01:00 committed by Wolfram Sang
parent 963f2076e3
commit 958f988995
1 changed files with 2 additions and 0 deletions
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2
drivers/i2c/busses/i2c-mxs.c
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@ -287,12 +287,14 @@ static int mxs_i2c_dma_setup_xfer(struct i2c_adapter *adap,
select_init_dma_fail:
dma_unmap_sg(i2c->dev, &i2c->sg_io[0], 1, DMA_TO_DEVICE);
select_init_pio_fail:
dmaengine_terminate_all(i2c->dmach);
return -EINVAL;
/* Write failpath. */
write_init_dma_fail:
dma_unmap_sg(i2c->dev, i2c->sg_io, 2, DMA_TO_DEVICE);
write_init_pio_fail:
dmaengine_terminate_all(i2c->dmach);
return -EINVAL;
}