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of/platform: Generalize /reserved-memory handling 

By iterating over all /reserved-memory child nodes and match each one to
a list of compatibles that we want to treat specially, we can easily
extend the list of compatibles to handle - without having to resort to
of_platform_populate() that would create unnecessary platform_devices.

Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Andy Gross <andy.gross@linaro.org>
This commit is contained in:
Bjorn Andersson 2017-10-10 22:08:53 -07:00 committed by Andy Gross
parent 8c1b7dc9ba
commit a50ff19d06
1 changed files with 10 additions and 8 deletions
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18
drivers/of/platform.c
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@ -497,6 +497,11 @@ int of_platform_default_populate(struct device_node *root,
EXPORT_SYMBOL_GPL(of_platform_default_populate);
#ifndef CONFIG_PPC
static const struct of_device_id reserved_mem_matches[] = {
{ .compatible = "ramoops" },
{}
};
static int __init of_platform_default_populate_init(void)
{
struct device_node *node;
@ -505,15 +510,12 @@ static int __init of_platform_default_populate_init(void)
return -ENODEV;
/*
* Handle ramoops explicitly, since it is inside /reserved-memory,
* which lacks a "compatible" property.
* Handle certain compatibles explicitly, since we don't want to create
* platform_devices for every node in /reserved-memory with a
* "compatible",
*/
node = of_find_node_by_path("/reserved-memory");
if (node) {
node = of_find_compatible_node(node, NULL, "ramoops");
if (node)
of_platform_device_create(node, NULL, NULL);
}
for_each_matching_node(node, reserved_mem_matches)
of_platform_device_create(node, NULL, NULL);
/* Populate everything else. */
of_platform_default_populate(NULL, NULL, NULL);