[PATCH v5 4/6] dmaengine: sh: rz-dmac: Allow for multiple DMACs

[Fabrizio Castro]

dma_request_channel() calls into __dma_request_channel() with
NULL as value for np, which won't allow for the selection of the
correct DMAC when multiple DMACs are available.

Switch to using __dma_request_channel() directly so that we can
choose the desired DMA for the channel. This is in preparation
of adding DMAC support for the Renesas RZ/V2H(P) and similar SoCs.

Signed-off-by: Fabrizio Castro <fabrizio.castro.jz@xxxxxxxxxxx>
Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@xxxxxxxxxxxxxx>
Reviewed-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
---
v4->v5:
* Collected tags.
v3->v4:
* No change.
v2->v3:
* Added () for calls in changelog.
v1->v2:
* No change.
---
 drivers/dma/sh/rz-dmac.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/dma/sh/rz-dmac.c b/drivers/dma/sh/rz-dmac.c
index 9235db551026..d7a4ce28040b 100644
--- a/drivers/dma/sh/rz-dmac.c
+++ b/drivers/dma/sh/rz-dmac.c
@@ -748,7 +748,8 @@ static struct dma_chan *rz_dmac_of_xlate(struct of_phandle_args *dma_spec,
 	dma_cap_zero(mask);
 	dma_cap_set(DMA_SLAVE, mask);
 
-	return dma_request_channel(mask, rz_dmac_chan_filter, dma_spec);
+	return __dma_request_channel(&mask, rz_dmac_chan_filter, dma_spec,
+				     ofdma->of_node);
 }
 
 /*
-- 
2.34.1