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authorPeter Ujfalusi <peter.ujfalusi@ti.com>2020-01-07 13:37:29 +0200
committerJonathan Cameron <Jonathan.Cameron@huawei.com>2020-01-12 11:34:11 +0000
commit687d39d4512aa5f644450d0662f40aeeac1e84a7 (patch)
tree3089bc72ce1f67c6622112ab97052a22e74554fc /drivers/iio/adc
parent735404b846dffcb320264f62b76e6f70012214dd (diff)
downloadlinux-687d39d4512aa5f644450d0662f40aeeac1e84a7.tar.gz
iio: adc: at91-sama5d2_adc: 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. Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Diffstat (limited to 'drivers/iio/adc')
-rw-r--r--drivers/iio/adc/at91-sama5d2_adc.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/iio/adc/at91-sama5d2_adc.c b/drivers/iio/adc/at91-sama5d2_adc.c
index e1850f3d5cf3..a5c7771227d5 100644
--- a/drivers/iio/adc/at91-sama5d2_adc.c
+++ b/drivers/iio/adc/at91-sama5d2_adc.c
@@ -1444,10 +1444,10 @@ static void at91_adc_dma_init(struct platform_device *pdev)
if (st->dma_st.dma_chan)
return;
- st->dma_st.dma_chan = dma_request_slave_channel(&pdev->dev, "rx");
-
- if (!st->dma_st.dma_chan) {
+ st->dma_st.dma_chan = dma_request_chan(&pdev->dev, "rx");
+ if (IS_ERR(st->dma_st.dma_chan)) {
dev_info(&pdev->dev, "can't get DMA channel\n");
+ st->dma_st.dma_chan = NULL;
goto dma_exit;
}