MIPS: PCI: Use struct list_head lists

Rather than open-coding a linked list implementation, make use of the
one in linux/list.h.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/14340/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

2 files changed, 6 insertions, 6 deletions

diff --git a/arch/mips/include/asm/pci.h b/arch/mips/include/asm/pci.h
index 9b63cd41213d..547e113ac0fe 100644
--- a/arch/mips/include/asm/pci.h
+++ b/arch/mips/include/asm/pci.h
@@ -17,6 +17,7 @@
  */
 
 #include <linux/ioport.h>
+#include <linux/list.h>
 #include <linux/of.h>
 
 /*
@@ -25,7 +26,7 @@
  * single controller supporting multiple channels.
  */
 struct pci_controller {
-        struct pci_controller *next;
+        struct list_head list;
         struct pci_bus *bus;
         struct device_node *of_node;
 
diff --git a/arch/mips/pci/pci.c b/arch/mips/pci/pci.c
index b4c02f29663e..644ae9696edd 100644
--- a/arch/mips/pci/pci.c
+++ b/arch/mips/pci/pci.c
@@ -28,8 +28,7 @@
 /*
  * The PCI controller list.
  */
-
-static struct pci_controller *hose_head, **hose_tail = &hose_head;
+static LIST_HEAD(controllers);
 
 unsigned long PCIBIOS_MIN_IO;
 unsigned long PCIBIOS_MIN_MEM;
@@ -193,8 +192,8 @@ void register_pci_controller(struct pci_controller *hose)
                 goto out;
         }
 
-        *hose_tail = hose;
-        hose_tail = &hose->next;
+        INIT_LIST_HEAD(&hose->list);
+        list_add(&hose->list, &controllers);
 
         /*
          * Do not panic here but later - this might happen before console init.
@@ -248,7 +247,7 @@ static int __init pcibios_init(void)
         pcibios_set_cache_line_size();
 
         /* Scan all of the recorded PCI controllers.  */
-        for (hose = hose_head; hose; hose = hose->next)
+        list_for_each_entry(hose, &controllers, list)
                 pcibios_scanbus(hose);
 
         pci_fixup_irqs(pci_common_swizzle, pcibios_map_irq);