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authorDavid S. Miller <davem@davemloft.net>2006-06-26 02:18:36 -0400
committerDavid S. Miller <davem@davemloft.net>2006-06-26 02:18:36 -0400
commitfb7cd9d9acfb52dc1b9fbd5079445e4732667bbc (patch)
treea4f554595e2cebcca8b594cfe20b9a79ac6e535f /arch/sparc64/kernel
parentdda9beb41414035de230e78cb53416f3e551295a (diff)
[SPARC]: Add of_set_property() interface.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc64/kernel')
-rw-r--r--arch/sparc64/kernel/prom.c53
1 files changed, 53 insertions, 0 deletions
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 @@
27 27
28static struct device_node *allnodes; 28static struct device_node *allnodes;
29 29
30/* use when traversing tree through the allnext, child, sibling,
31 * or parent members of struct device_node.
32 */
33static DEFINE_RWLOCK(devtree_lock);
34
30int of_device_is_compatible(struct device_node *device, const char *compat) 35int of_device_is_compatible(struct device_node *device, const char *compat)
31{ 36{
32 const char* cp; 37 const char* cp;
@@ -185,6 +190,54 @@ int of_getintprop_default(struct device_node *np, const char *name, int def)
185} 190}
186EXPORT_SYMBOL(of_getintprop_default); 191EXPORT_SYMBOL(of_getintprop_default);
187 192
193int of_set_property(struct device_node *dp, const char *name, void *val, int len)
194{
195 struct property **prevp;
196 void *new_val;
197 int err;
198
199 new_val = kmalloc(len, GFP_KERNEL);
200 if (!new_val)
201 return -ENOMEM;
202
203 memcpy(new_val, val, len);
204
205 err = -ENODEV;
206
207 write_lock(&devtree_lock);
208 prevp = &dp->properties;
209 while (*prevp) {
210 struct property *prop = *prevp;
211
212 if (!strcmp(prop->name, name)) {
213 void *old_val = prop->value;
214 int ret;
215
216 ret = prom_setprop(dp->node, name, val, len);
217 err = -EINVAL;
218 if (ret >= 0) {
219 prop->value = new_val;
220 prop->length = len;
221
222 if (OF_IS_DYNAMIC(prop))
223 kfree(old_val);
224
225 OF_MARK_DYNAMIC(prop);
226
227 err = 0;
228 }
229 break;
230 }
231 prevp = &(*prevp)->next;
232 }
233 write_unlock(&devtree_lock);
234
235 /* XXX Upate procfs if necessary... */
236
237 return err;
238}
239EXPORT_SYMBOL(of_set_property);
240
188static unsigned int prom_early_allocated; 241static unsigned int prom_early_allocated;
189 242
190static void * __init prom_early_alloc(unsigned long size) 243static void * __init prom_early_alloc(unsigned long size)