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mmc: sh_mmcif: 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.

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

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Link: https://lore.kernel.org/r/20191217113031.31847-1-peter.ujfalusi@ti.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Peter Ujfalusi 2019-12-17 13:30:31 +02:00 committed by Ulf Hansson
parent e1ebb456ae
commit b67b45179b
1 changed files with 6 additions and 2 deletions
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8
drivers/mmc/host/sh_mmcif.c
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@ -432,8 +432,12 @@ static void sh_mmcif_request_dma(struct sh_mmcif_host *host)
host->chan_rx = sh_mmcif_request_dma_pdata(host,
pdata->slave_id_rx);
} else {
host->chan_tx = dma_request_slave_channel(dev, "tx");
host->chan_rx = dma_request_slave_channel(dev, "rx");
host->chan_tx = dma_request_chan(dev, "tx");
if (IS_ERR(host->chan_tx))
host->chan_tx = NULL;
host->chan_rx = dma_request_chan(dev, "rx");
if (IS_ERR(host->chan_rx))
host->chan_rx = NULL;
}
dev_dbg(dev, "%s: got channel TX %p RX %p\n", __func__, host->chan_tx,
host->chan_rx);