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dmaengine: dw: dmamux: fix OF node leak on route allocation failure

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Make sure to drop the reference taken to the DMA master OF node also on
late route allocation failures.

Fixes: 134d9c52fc ("dmaengine: dw: dmamux: Introduce RZN1 DMA router support")
Cc: stable@vger.kernel.org	# 5.19
Cc: Miquel Raynal <miquel.raynal@bootlin.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://patch.msgid.link/20251117161258.10679-6-johan@kernel.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>
This commit is contained in:
Johan Hovold 2025-11-17 17:12:47 +01:00 • committed by Vinod Koul
parent 7bb7d696e0
commit ec25e60f9f
1 changed files with 3 additions and 1 deletions
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4
drivers/dma/dw/rzn1-dmamux.c
View file

@ -90,7 +90,7 @@ static void *rzn1_dmamux_route_allocate(struct of_phandle_args *dma_spec,
if (test_and_set_bit(map->req_idx, dmamux->used_chans)) {
ret = -EBUSY;
goto free_map;
goto put_dma_spec_np;
}
mask = BIT(map->req_idx);
@ -103,6 +103,8 @@ static void *rzn1_dmamux_route_allocate(struct of_phandle_args *dma_spec,
clear_bitmap:
clear_bit(map->req_idx, dmamux->used_chans);
put_dma_spec_np:
of_node_put(dma_spec->np);
free_map:
kfree(map);
put_device: