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Subject[PATCH] i2c: mxs: Use dma_request_chan() instead dma_request_slave_channel()
Date
dma_request_slave_channel() is a wrapper on top of dma_request_chan()
eating up the error code.

By using dma_request_chan() directly the driver can support deferred
probing against DMA.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
---
drivers/i2c/busses/i2c-mxs.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/i2c/busses/i2c-mxs.c b/drivers/i2c/busses/i2c-mxs.c
index 89224913f578..03f5eee9883a 100644
--- a/drivers/i2c/busses/i2c-mxs.c
+++ b/drivers/i2c/busses/i2c-mxs.c
@@ -836,10 +836,10 @@ static int mxs_i2c_probe(struct platform_device *pdev)
}

/* Setup the DMA */
- i2c->dmach = dma_request_slave_channel(dev, "rx-tx");
- if (!i2c->dmach) {
+ i2c->dmach = dma_request_chan(dev, "rx-tx");
+ if (IS_ERR(i2c->dmach)) {
dev_err(dev, "Failed to request dma\n");
- return -ENODEV;
+ return PTR_ERR(i2c->dmach);
}

platform_set_drvdata(pdev, i2c);
--
Peter
Texas Instruments Finland Oy, Porkkalankatu 22, 00180 Helsinki.
Y-tunnus/Business ID: 0615521-4. Kotipaikka/Domicile: Helsinki

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