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spi: cadence-xspi: use for_each_available_child_of_node_scoped()

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Refactor code for "is the node's child available?" check by using the
corresponding macro instead, which reads more clearly.

While at it, use scope-based cleanup instead of manual of_node_put()
calls when getting platform data through cdns_xspi_of_get_plat_data().

This removes the unnecessary "node_child" declaration out of the loop's
scope and auto cleans up "node_child" when it goes out of scope, even
when we return early due to error.

Signed-off-by: Kousik Sanagavarapu <five231003@gmail.com>
Link: https://msgid.link/r/20240410130205.179069-1-five231003@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Kousik Sanagavarapu 2024-04-10 18:31:16 +05:30 committed by Mark Brown
parent 563f8598cb
commit b0f3e56938
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1 changed files with 1 additions and 7 deletions
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8
drivers/spi/spi-cadence-xspi.c
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@ -486,20 +486,14 @@ static irqreturn_t cdns_xspi_irq_handler(int this_irq, void *dev)
static int cdns_xspi_of_get_plat_data(struct platform_device *pdev)
{
struct device_node *node_prop = pdev->dev.of_node;
struct device_node *node_child;
unsigned int cs;
for_each_child_of_node(node_prop, node_child) {
if (!of_device_is_available(node_child))
continue;
for_each_available_child_of_node_scoped(node_prop, node_child) {
if (of_property_read_u32(node_child, "reg", &cs)) {
dev_err(&pdev->dev, "Couldn't get memory chip select\n");
of_node_put(node_child);
return -ENXIO;
} else if (cs >= CDNS_XSPI_MAX_BANKS) {
dev_err(&pdev->dev, "reg (cs) parameter value too large\n");
of_node_put(node_child);
return -ENXIO;
}
}