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ata: pata_arasan_cf: Use dma_request_chan() instead dma_request_slave_channel() 

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

The dma_request_chan() is the standard API to request slave channel,
clients should be moved away from the legacy API to allow us to retire
them.

Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Peter Ujfalusi 2020-01-13 16:27:47 +02:00 committed by Jens Axboe
parent 10a663a1b1
commit 7991901082
1 changed files with 4 additions and 2 deletions
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6
drivers/ata/pata_arasan_cf.c
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@ -526,9 +526,10 @@ static void data_xfer(struct work_struct *work)
/* request dma channels */
/* dma_request_channel may sleep, so calling from process context */
acdev->dma_chan = dma_request_slave_channel(acdev->host->dev, "data");
if (!acdev->dma_chan) {
acdev->dma_chan = dma_request_chan(acdev->host->dev, "data");
if (IS_ERR(acdev->dma_chan)) {
dev_err(acdev->host->dev, "Unable to get dma_chan\n");
acdev->dma_chan = NULL;
goto chan_request_fail;
}
@ -539,6 +540,7 @@ static void data_xfer(struct work_struct *work)
}
dma_release_channel(acdev->dma_chan);
acdev->dma_chan = NULL;
/* data xferred successfully */
if (!ret) {