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authorPeter Ujfalusi <peter.ujfalusi@ti.com>2019-12-17 10:37:30 +0300
committerMichael Ellerman <mpe@ellerman.id.au>2020-01-06 08:25:29 +0300
commitfb185a4052b18c97ebc98f6a8db30a60abca35e0 (patch)
tree110b5466e2b8e199db664759659f2f000419fdd9 /arch/powerpc/platforms/512x
parent1c7f4fe86f17f296bafab1d418c040533324bf4f (diff)
downloadlinux-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.c6
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");