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.
Signed-off-by: Bjorn Andersson <bjorn.andersson@xxxxxxxxxx>
---
Changes since v2:
- Simplify logic per Rob's suggestion.
Changes since v1:
- New patch
drivers/of/platform.c | 18 ++++++++++--------
1 file changed, 10 insertions(+), 8 deletions(-)
diff --git a/drivers/of/platform.c b/drivers/of/platform.c
index b19524623498..ee89f096f0f3 100644
--- a/drivers/of/platform.c
+++ b/drivers/of/platform.c
@@ -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);
--
2.12.0
--
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