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dma: dma-axi-dmac: simplify axi_dmac_parse_dt()

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Simplify axi_dmac_parse_dt() by using the cleanup device_node class for
automatically releasing the of_node reference when going out of scope.

Signed-off-by: Nuno Sá <nuno.sa@analog.com>
base-commit: 3980351785
change-id: 20251104-axi-dmac-fixes-and-improvs-e3ad512a329c
Acked-by: Michael Hennerich <michael.hennerich@analog.com>
Link: https://patch.msgid.link/20251104-axi-dmac-fixes-and-improvs-v1-4-3e6fd9328f72@analog.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
This commit is contained in:
Nuno Sá 2025-11-04 16:22:28 +00:00 • committed by Vinod Koul
parent b2440442cc
commit c23918bedc
1 changed files with 5 additions and 8 deletions
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13
drivers/dma/dma-axi-dmac.c
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@ -8,6 +8,7 @@
#include <linux/adi-axi-common.h>
#include <linux/bitfield.h>
#include <linux/cleanup.h>
#include <linux/clk.h>
#include <linux/device.h>
#include <linux/dma-mapping.h>
@ -927,22 +928,18 @@ static int axi_dmac_parse_chan_dt(struct device_node *of_chan,
static int axi_dmac_parse_dt(struct device *dev, struct axi_dmac *dmac)
{
struct device_node *of_channels, *of_chan;
int ret;
of_channels = of_get_child_by_name(dev->of_node, "adi,channels");
struct device_node *of_channels __free(device_node) = of_get_child_by_name(dev->of_node,
"adi,channels");
if (of_channels == NULL)
return -ENODEV;
for_each_child_of_node(of_channels, of_chan) {
for_each_child_of_node_scoped(of_channels, of_chan) {
ret = axi_dmac_parse_chan_dt(of_chan, &dmac->chan);
if (ret) {
of_node_put(of_chan);
of_node_put(of_channels);
if (ret)
return -EINVAL;
}
}
of_node_put(of_channels);
return 0;
}