diff options
Diffstat (limited to 'drivers/of')
| -rw-r--r-- | drivers/of/of_reserved_mem.c | 26 | ||||
| -rw-r--r-- | drivers/of/platform.c | 19 |
2 files changed, 37 insertions, 8 deletions
diff --git a/drivers/of/of_reserved_mem.c b/drivers/of/of_reserved_mem.c index 32771c2ced7b..22b75c82e377 100644 --- a/drivers/of/of_reserved_mem.c +++ b/drivers/of/of_reserved_mem.c @@ -397,3 +397,29 @@ void of_reserved_mem_device_release(struct device *dev) rmem->ops->device_release(rmem, dev); } EXPORT_SYMBOL_GPL(of_reserved_mem_device_release); + +/** + * of_reserved_mem_lookup() - acquire reserved_mem from a device node + * @np: node pointer of the desired reserved-memory region + * + * This function allows drivers to acquire a reference to the reserved_mem + * struct based on a device node handle. + * + * Returns a reserved_mem reference, or NULL on error. + */ +struct reserved_mem *of_reserved_mem_lookup(struct device_node *np) +{ + const char *name; + int i; + + if (!np->full_name) + return NULL; + + name = kbasename(np->full_name); + for (i = 0; i < reserved_mem_count; i++) + if (!strcmp(reserved_mem[i].name, name)) + return &reserved_mem[i]; + + return NULL; +} +EXPORT_SYMBOL_GPL(of_reserved_mem_lookup); diff --git a/drivers/of/platform.c b/drivers/of/platform.c index ac15d0e3d27d..b7cf84b29737 100644 --- a/drivers/of/platform.c +++ b/drivers/of/platform.c @@ -497,6 +497,12 @@ 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 = "qcom,rmtfs-mem" }, + { .compatible = "ramoops" }, + {} +}; + static int __init of_platform_default_populate_init(void) { struct device_node *node; @@ -505,15 +511,12 @@ 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); |