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Linux/arch/alpha/kernel/gct.c

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  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 }
 49 

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