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dmaengine: ti: Add missing put_device in ti_dra7_xbar_route_allocate

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commit 615a4bfc42 upstream.

of_find_device_by_node() takes reference, we should use put_device()
to release it when not need anymore.

Fixes: a074ae38f8 ("dmaengine: Add driver for TI DMA crossbar on DRA7x")
Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
Acked-by: Peter Ujfalusi <peter.ujfalusi@gmail.com>
Link: https://lore.kernel.org/r/20220605042723.17668-1-linmq006@gmail.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Miaoqian Lin 2022-06-05 08:27:22 +04:00 committed by Greg Kroah-Hartman
parent 61b4ef19c3
commit 83b1e3ca6a
1 changed files with 4 additions and 0 deletions
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4
drivers/dma/ti-dma-crossbar.c
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@ -251,6 +251,7 @@ static void *ti_dra7_xbar_route_allocate(struct of_phandle_args *dma_spec,
if (dma_spec->args[0] >= xbar->xbar_requests) {
dev_err(&pdev->dev, "Invalid XBAR request number: %d\n",
dma_spec->args[0]);
put_device(&pdev->dev);
return ERR_PTR(-EINVAL);
}
@ -258,12 +259,14 @@ static void *ti_dra7_xbar_route_allocate(struct of_phandle_args *dma_spec,
dma_spec->np = of_parse_phandle(ofdma->of_node, "dma-masters", 0);
if (!dma_spec->np) {
dev_err(&pdev->dev, "Can't get DMA master\n");
put_device(&pdev->dev);
return ERR_PTR(-EINVAL);
}
map = kzalloc(sizeof(*map), GFP_KERNEL);
if (!map) {
of_node_put(dma_spec->np);
put_device(&pdev->dev);
return ERR_PTR(-ENOMEM);
}
@ -275,6 +278,7 @@ static void *ti_dra7_xbar_route_allocate(struct of_phandle_args *dma_spec,
dev_err(&pdev->dev, "Run out of free DMA requests\n");
kfree(map);
of_node_put(dma_spec->np);
put_device(&pdev->dev);
return ERR_PTR(-ENOMEM);
}
set_bit(map->xbar_out, xbar->dma_inuse);