drivers/ide/palm_bk3710.c buildfix

[linux-2.6-omap-h63xx.git] / drivers / of / base.c

diff --git a/drivers/of/base.c b/drivers/of/base.c
index 4f884a358a7bcce37d24dce2c4a622dd41c01362..cd17092b82bd4bbfa93e760e994046861d8f9902 100644 (file)
--- a/drivers/of/base.c
+++ b/drivers/of/base.c
@@ -499,8 +499,8 @@ EXPORT_SYMBOL_GPL(of_modalias_node);
  * @list_name: property name that contains a list
  * @cells_name:        property name that specifies phandles' arguments count
  * @index:     index of a phandle to parse out
- * @out_node:  pointer to device_node struct pointer (will be filled)
- * @out_args:  pointer to arguments pointer (will be filled)
+ * @out_node:  optional pointer to device_node struct pointer (will be filled)
+ * @out_args:  optional pointer to arguments pointer (will be filled)
  *
  * This function is useful to parse lists of phandles and their arguments.
  * Returns 0 on success and fills out_node and out_args, on error returns
@@ -534,7 +534,7 @@ int of_parse_phandles_with_args(struct device_node *np, const char *list_name,
        int size;
        int cur_index = 0;
        struct device_node *node = NULL;
-       const void *args;
+       const void *args = NULL;
 
        list = of_get_property(np, list_name, &size);
        if (!list) {
@@ -547,14 +547,12 @@ int of_parse_phandles_with_args(struct device_node *np, const char *list_name,
                const u32 *cells;
                const phandle *phandle;
 
-               phandle = list;
-               args = list + 1;
+               phandle = list++;
+               args = list;
 
                /* one cell hole in the list = <>; */
-               if (!*phandle) {
-                       list++;
+               if (!*phandle)
                        goto next;
-               }
 
                node = of_find_node_by_phandle(*phandle);
                if (!node) {
@@ -570,8 +568,7 @@ int of_parse_phandles_with_args(struct device_node *np, const char *list_name,
                        goto err1;
                }
 
-               /* Next phandle is at offset of one phandle cell + #cells */
-               list += 1 + *cells;
+               list += *cells;
                if (list > list_end) {
                        pr_debug("%s: insufficient arguments length\n",
                                 np->full_name);
@@ -583,16 +580,26 @@ next:
 
                of_node_put(node);
                node = NULL;
+               args = NULL;
                cur_index++;
        }
 
        if (!node) {
-               ret = -ENOENT;
+               /*
+                * args w/o node indicates that the loop above has stopped at
+                * the 'hole' cell. Report this differently.
+                */
+               if (args)
+                       ret = -EEXIST;
+               else
+                       ret = -ENOENT;
                goto err0;
        }
 
-       *out_node = node;
-       *out_args = args;
+       if (out_node)
+               *out_node = node;
+       if (out_args)
+               *out_args = args;
 
        return 0;
 err1: