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authorBjorn Andersson <bjorn.andersson@linaro.org>2017-10-10 22:08:53 -0700
committerAndy Gross <andy.gross@linaro.org>2017-10-22 05:06:33 -0500
commita50ff19d0658d8a09026158448894f06a4521f33 (patch)
treef9f4927d4bb7dd10ea5cbcdce4abe8a0a4e61679 /drivers/of
parent8c1b7dc9ba2294c6dbd1870a3d2e534bfda3047a (diff)
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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>
Diffstat (limited to 'drivers/of')
-rw-r--r--drivers/of/platform.c18
1 files changed, 10 insertions, 8 deletions
diff --git a/drivers/of/platform.c b/drivers/of/platform.c
index ac15d0e3d27d..922b46646bcc 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);