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mtd: rawnand: qcom: Use dma_request_chan() instead dma_request_slave_channel()

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dma_request_slave_channel() is a wrapper on top of dma_request_chan()
eating up the error code.

Use using dma_request_chan() directly to return the real error code.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20200227123749.24064-7-peter.ujfalusi@ti.com
This commit is contained in:
Peter Ujfalusi 2020-02-27 14:37:48 +02:00 committed by Miquel Raynal
parent 80c3012e12
commit 92f0f8efbd
1 changed files with 33 additions and 17 deletions
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50
drivers/mtd/nand/raw/qcom_nandc.c
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@ -2696,24 +2696,36 @@ static int qcom_nandc_alloc(struct qcom_nand_controller *nandc)
return -EIO;
}
nandc->tx_chan = dma_request_slave_channel(nandc->dev, "tx");
if (!nandc->tx_chan) {
dev_err(nandc->dev, "failed to request tx channel\n");
ret = -ENODEV;
nandc->tx_chan = dma_request_chan(nandc->dev, "tx");
if (IS_ERR(nandc->tx_chan)) {
ret = PTR_ERR(nandc->tx_chan);
nandc->tx_chan = NULL;
if (ret != -EPROBE_DEFER)
dev_err(nandc->dev,
"tx DMA channel request failed: %d\n",
ret);
goto unalloc;
}
nandc->rx_chan = dma_request_slave_channel(nandc->dev, "rx");
if (!nandc->rx_chan) {
dev_err(nandc->dev, "failed to request rx channel\n");
ret = -ENODEV;
nandc->rx_chan = dma_request_chan(nandc->dev, "rx");
if (IS_ERR(nandc->rx_chan)) {
ret = PTR_ERR(nandc->rx_chan);
nandc->rx_chan = NULL;
if (ret != -EPROBE_DEFER)
dev_err(nandc->dev,
"rx DMA channel request failed: %d\n",
ret);
goto unalloc;
}
nandc->cmd_chan = dma_request_slave_channel(nandc->dev, "cmd");
if (!nandc->cmd_chan) {
dev_err(nandc->dev, "failed to request cmd channel\n");
ret = -ENODEV;
nandc->cmd_chan = dma_request_chan(nandc->dev, "cmd");
if (IS_ERR(nandc->cmd_chan)) {
ret = PTR_ERR(nandc->cmd_chan);
nandc->cmd_chan = NULL;
if (ret != -EPROBE_DEFER)
dev_err(nandc->dev,
"cmd DMA channel request failed: %d\n",
ret);
goto unalloc;
}
@ -2732,11 +2744,15 @@ static int qcom_nandc_alloc(struct qcom_nand_controller *nandc)
goto unalloc;
}
} else {
nandc->chan = dma_request_slave_channel(nandc->dev, "rxtx");
if (!nandc->chan) {
dev_err(nandc->dev,
"failed to request slave channel\n");
return -ENODEV;
nandc->chan = dma_request_chan(nandc->dev, "rxtx");
if (IS_ERR(nandc->chan)) {
ret = PTR_ERR(nandc->chan);
nandc->chan = NULL;
if (ret != -EPROBE_DEFER)
dev_err(nandc->dev,
"rxtx DMA channel request failed: %d\n",
ret);
return ret;
}
}