diff options
| author | Peter Ujfalusi <peter.ujfalusi@ti.com> | 2019-12-17 10:37:30 +0300 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2020-01-06 08:25:29 +0300 |
| commit | fb185a4052b18c97ebc98f6a8db30a60abca35e0 (patch) | |
| tree | 110b5466e2b8e199db664759659f2f000419fdd9 /arch/powerpc/platforms/512x | |
| parent | 1c7f4fe86f17f296bafab1d418c040533324bf4f (diff) | |
| download | linux-fb185a4052b18c97ebc98f6a8db30a60abca35e0.tar.xz | |
powerpc/512x: 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.
By using dma_request_chan() directly the driver can support deferred
probing against DMA.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20191217073730.21249-1-peter.ujfalusi@ti.com
Diffstat (limited to 'arch/powerpc/platforms/512x')
| -rw-r--r-- | arch/powerpc/platforms/512x/mpc512x_lpbfifo.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/arch/powerpc/platforms/512x/mpc512x_lpbfifo.c b/arch/powerpc/platforms/512x/mpc512x_lpbfifo.c index 13631f35cd14..04bf6ecf7d55 100644 --- a/arch/powerpc/platforms/512x/mpc512x_lpbfifo.c +++ b/arch/powerpc/platforms/512x/mpc512x_lpbfifo.c @@ -434,9 +434,9 @@ static int mpc512x_lpbfifo_probe(struct platform_device *pdev) memset(&lpbfifo, 0, sizeof(struct lpbfifo_data)); spin_lock_init(&lpbfifo.lock); - lpbfifo.chan = dma_request_slave_channel(&pdev->dev, "rx-tx"); - if (lpbfifo.chan == NULL) - return -EPROBE_DEFER; + lpbfifo.chan = dma_request_chan(&pdev->dev, "rx-tx"); + if (IS_ERR(lpbfifo.chan)) + return PTR_ERR(lpbfifo.chan); if (of_address_to_resource(pdev->dev.of_node, 0, &r) != 0) { dev_err(&pdev->dev, "bad 'reg' in 'sclpc' device tree node\n"); |