diff options
Diffstat (limited to 'drivers/of')
| -rw-r--r-- | drivers/of/base.c | 28 | ||||
| -rw-r--r-- | drivers/of/device.c | 25 | ||||
| -rw-r--r-- | drivers/of/fdt.c | 9 | ||||
| -rw-r--r-- | drivers/of/of_mdio.c | 1 |
4 files changed, 59 insertions, 4 deletions
diff --git a/drivers/of/base.c b/drivers/of/base.c index 8f2a1dbfe75c..d7c4629a3a2d 100644 --- a/drivers/of/base.c +++ b/drivers/of/base.c @@ -25,6 +25,7 @@ #include <linux/cpu.h> #include <linux/module.h> #include <linux/of.h> +#include <linux/of_device.h> #include <linux/of_graph.h> #include <linux/spinlock.h> #include <linux/slab.h> @@ -2115,7 +2116,7 @@ void of_alias_scan(void * (*dt_alloc)(u64 size, u64 align)) continue; /* Allocate an alias_prop with enough space for the stem */ - ap = dt_alloc(sizeof(*ap) + len + 1, 4); + ap = dt_alloc(sizeof(*ap) + len + 1, __alignof__(*ap)); if (!ap) continue; memset(ap, 0, sizeof(*ap) + len + 1); @@ -2271,6 +2272,31 @@ struct device_node *of_find_next_cache_node(const struct device_node *np) } /** + * of_find_last_cache_level - Find the level at which the last cache is + * present for the given logical cpu + * + * @cpu: cpu number(logical index) for which the last cache level is needed + * + * Returns the the level at which the last cache is present. It is exactly + * same as the total number of cache levels for the given logical cpu. + */ +int of_find_last_cache_level(unsigned int cpu) +{ + u32 cache_level = 0; + struct device_node *prev = NULL, *np = of_cpu_device_node_get(cpu); + + while (np) { + prev = np; + of_node_put(np); + np = of_find_next_cache_node(np); + } + + of_property_read_u32(prev, "cache-level", &cache_level); + + return cache_level; +} + +/** * of_graph_parse_endpoint() - parse common endpoint node properties * @node: pointer to endpoint device_node * @endpoint: pointer to the OF endpoint data structure diff --git a/drivers/of/device.c b/drivers/of/device.c index fd5cfad7c403..b1e6bebda3f3 100644 --- a/drivers/of/device.c +++ b/drivers/of/device.c @@ -225,6 +225,30 @@ ssize_t of_device_get_modalias(struct device *dev, char *str, ssize_t len) return tsize; } +EXPORT_SYMBOL_GPL(of_device_get_modalias); + +int of_device_request_module(struct device *dev) +{ + char *str; + ssize_t size; + int ret; + + size = of_device_get_modalias(dev, NULL, 0); + if (size < 0) + return size; + + str = kmalloc(size + 1, GFP_KERNEL); + if (!str) + return -ENOMEM; + + of_device_get_modalias(dev, str, size); + str[size] = '\0'; + ret = request_module(str); + kfree(str); + + return ret; +} +EXPORT_SYMBOL_GPL(of_device_request_module); /** * of_device_uevent - Display OF related uevent information @@ -287,3 +311,4 @@ int of_device_uevent_modalias(struct device *dev, struct kobj_uevent_env *env) return 0; } +EXPORT_SYMBOL_GPL(of_device_uevent_modalias); diff --git a/drivers/of/fdt.c b/drivers/of/fdt.c index 4ae68bc50677..e5ce4b59e162 100644 --- a/drivers/of/fdt.c +++ b/drivers/of/fdt.c @@ -738,9 +738,12 @@ int __init of_scan_flat_dt(int (*it)(unsigned long node, const char *pathp; int offset, rc = 0, depth = -1; - for (offset = fdt_next_node(blob, -1, &depth); - offset >= 0 && depth >= 0 && !rc; - offset = fdt_next_node(blob, offset, &depth)) { + if (!blob) + return 0; + + for (offset = fdt_next_node(blob, -1, &depth); + offset >= 0 && depth >= 0 && !rc; + offset = fdt_next_node(blob, offset, &depth)) { pathp = fdt_get_name(blob, offset, NULL); if (*pathp == '/') diff --git a/drivers/of/of_mdio.c b/drivers/of/of_mdio.c index 262281bd68fa..0b2979816dbf 100644 --- a/drivers/of/of_mdio.c +++ b/drivers/of/of_mdio.c @@ -147,6 +147,7 @@ EXPORT_SYMBOL(of_mdio_parse_addr); */ static const struct of_device_id whitelist_phys[] = { { .compatible = "brcm,40nm-ephy" }, + { .compatible = "broadcom,bcm5241" }, { .compatible = "marvell,88E1111", }, { .compatible = "marvell,88e1116", }, { .compatible = "marvell,88e1118", }, |