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| author | David S. Miller <davem@davemloft.net> | 2006-06-25 23:18:36 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2006-06-25 23:18:36 -0700 |
| commit | fb7cd9d9acfb52dc1b9fbd5079445e4732667bbc (patch) | |
| tree | a4f554595e2cebcca8b594cfe20b9a79ac6e535f /arch | |
| parent | dda9beb41414035de230e78cb53416f3e551295a (diff) | |
| download | linux-stable-fb7cd9d9acfb52dc1b9fbd5079445e4732667bbc.tar.gz linux-stable-fb7cd9d9acfb52dc1b9fbd5079445e4732667bbc.tar.bz2 linux-stable-fb7cd9d9acfb52dc1b9fbd5079445e4732667bbc.zip | |
[SPARC]: Add of_set_property() interface.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/sparc/kernel/prom.c | 53 | ||||
| -rw-r--r-- | arch/sparc64/kernel/prom.c | 53 |
2 files changed, 106 insertions, 0 deletions
diff --git a/arch/sparc/kernel/prom.c b/arch/sparc/kernel/prom.c index 63b2b9bd778e..f3f53f2e0e1e 100644 --- a/arch/sparc/kernel/prom.c +++ b/arch/sparc/kernel/prom.c @@ -27,6 +27,11 @@ static struct device_node *allnodes; +/* use when traversing tree through the allnext, child, sibling, + * or parent members of struct device_node. + */ +static DEFINE_RWLOCK(devtree_lock); + int of_device_is_compatible(struct device_node *device, const char *compat) { const char* cp; @@ -185,6 +190,54 @@ int of_getintprop_default(struct device_node *np, const char *name, int def) } EXPORT_SYMBOL(of_getintprop_default); +int of_set_property(struct device_node *dp, const char *name, void *val, int len) +{ + struct property **prevp; + void *new_val; + int err; + + new_val = kmalloc(len, GFP_KERNEL); + if (!new_val) + return -ENOMEM; + + memcpy(new_val, val, len); + + err = -ENODEV; + + write_lock(&devtree_lock); + prevp = &dp->properties; + while (*prevp) { + struct property *prop = *prevp; + + if (!strcmp(prop->name, name)) { + void *old_val = prop->value; + int ret; + + ret = prom_setprop(dp->node, name, val, len); + err = -EINVAL; + if (ret >= 0) { + prop->value = new_val; + prop->length = len; + + if (OF_IS_DYNAMIC(prop)) + kfree(old_val); + + OF_MARK_DYNAMIC(prop); + + err = 0; + } + break; + } + prevp = &(*prevp)->next; + } + write_unlock(&devtree_lock); + + /* XXX Upate procfs if necessary... */ + + return err; +} +EXPORT_SYMBOL(of_set_property); + static unsigned int prom_early_allocated; static void * __init prom_early_alloc(unsigned long size) diff --git a/arch/sparc64/kernel/prom.c b/arch/sparc64/kernel/prom.c index e9d703eea806..c62fd3e7a0f8 100644 --- a/arch/sparc64/kernel/prom.c +++ b/arch/sparc64/kernel/prom.c @@ -27,6 +27,11 @@ static struct device_node *allnodes; +/* use when traversing tree through the allnext, child, sibling, + * or parent members of struct device_node. + */ +static DEFINE_RWLOCK(devtree_lock); + int of_device_is_compatible(struct device_node *device, const char *compat) { const char* cp; @@ -185,6 +190,54 @@ int of_getintprop_default(struct device_node *np, const char *name, int def) } EXPORT_SYMBOL(of_getintprop_default); +int of_set_property(struct device_node *dp, const char *name, void *val, int len) +{ + struct property **prevp; + void *new_val; + int err; + + new_val = kmalloc(len, GFP_KERNEL); + if (!new_val) + return -ENOMEM; + + memcpy(new_val, val, len); + + err = -ENODEV; + + write_lock(&devtree_lock); + prevp = &dp->properties; + while (*prevp) { + struct property *prop = *prevp; + + if (!strcmp(prop->name, name)) { + void *old_val = prop->value; + int ret; + + ret = prom_setprop(dp->node, name, val, len); + err = -EINVAL; + if (ret >= 0) { + prop->value = new_val; + prop->length = len; + + if (OF_IS_DYNAMIC(prop)) + kfree(old_val); + + OF_MARK_DYNAMIC(prop); + + err = 0; + } + break; + } + prevp = &(*prevp)->next; + } + write_unlock(&devtree_lock); + + /* XXX Upate procfs if necessary... */ + + return err; +} +EXPORT_SYMBOL(of_set_property); + static unsigned int prom_early_allocated; static void * __init prom_early_alloc(unsigned long size) |