arch/alpha/kernel/gct.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  *      linux/arch/alpha/kernel/gct.c
   4  */
   5
   6 #include <linux/kernel.h>
   7 #include <linux/types.h>
   8 #include <linux/errno.h>
   9
  10 #include <asm/hwrpb.h>
  11 #include <asm/gct.h>
  12
  13 int
  14 gct6_find_nodes(gct6_node *node, gct6_search_struct *search)
  15 {
  16         gct6_search_struct *wanted;
  17         int status = 0;
  18
  19         /* First check the magic number.  */
  20         if (node->magic != GCT_NODE_MAGIC) {
  21                 printk(KERN_ERR "GCT Node MAGIC incorrect - GCT invalid\n");
  22                 return -EINVAL;
  23         }
  24
  25         /* Check against the search struct.  */
  26         for (wanted = search;
  27              wanted && (wanted->type | wanted->subtype);
  28              wanted++) {
  29                 if (node->type != wanted->type)
  30                         continue;
  31                 if (node->subtype != wanted->subtype)
  32                         continue;
  33
  34                 /* Found it -- call out.  */
  35                 if (wanted->callout)
  36                         wanted->callout(node);
  37         }
  38
  39         /* Now walk the tree, siblings first.  */
  40         if (node->next)
  41                 status |= gct6_find_nodes(GCT_NODE_PTR(node->next), search);
  42
  43         /* Then the children.  */
  44         if (node->child)
  45                 status |= gct6_find_nodes(GCT_NODE_PTR(node->child), search);
  46
  47         return status;
  48 }