diff options
Diffstat (limited to 'arch/sparc64/kernel/prom.c')
| -rw-r--r-- | arch/sparc64/kernel/prom.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/sparc64/kernel/prom.c b/arch/sparc64/kernel/prom.c index 3c048ac4e638..922dd612612e 100644 --- a/arch/sparc64/kernel/prom.c +++ b/arch/sparc64/kernel/prom.c @@ -59,6 +59,9 @@ int of_getintprop_default(struct device_node *np, const char *name, int def) } EXPORT_SYMBOL(of_getintprop_default); +DEFINE_MUTEX(of_set_property_mutex); +EXPORT_SYMBOL(of_set_property_mutex); + int of_set_property(struct device_node *dp, const char *name, void *val, int len) { struct property **prevp; @@ -82,7 +85,10 @@ int of_set_property(struct device_node *dp, const char *name, void *val, int len void *old_val = prop->value; int ret; + mutex_lock(&of_set_property_mutex); ret = prom_setprop(dp->node, name, val, len); + mutex_unlock(&of_set_property_mutex); + err = -EINVAL; if (ret >= 0) { prop->value = new_val; |