EISA/PCI: Init EISA early, before PNP

[karo-tx-linux.git] / drivers / eisa / pci_eisa.c

diff --git a/drivers/eisa/pci_eisa.c b/drivers/eisa/pci_eisa.c
index ef5c3ec874320b0678c589c880dff835a06b663b..6c3fca97d346db9c6912bd3977eec99c5c7d563a 100644 (file)
--- a/drivers/eisa/pci_eisa.c
+++ b/drivers/eisa/pci_eisa.c
@@ -19,8 +19,7 @@
 /* There is only *one* pci_eisa device per machine, right ? */
 static struct eisa_root_device pci_eisa_root;
 
-static int __init pci_eisa_init(struct pci_dev *pdev,
-                               const struct pci_device_id *ent)
+static int __init pci_eisa_init(struct pci_dev *pdev)
 {
        int rc, i;
        struct resource *res, *bus_res = NULL;
@@ -67,22 +66,26 @@ static int __init pci_eisa_init(struct pci_dev *pdev,
        return 0;
 }
 
-static struct pci_device_id pci_eisa_pci_tbl[] = {
-       { PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID,
-         PCI_CLASS_BRIDGE_EISA << 8, 0xffff00, 0 },
-       { 0, }
-};
+/*
+ * We have to call pci_eisa_init_early() before pnpacpi_init()/isapnp_init().
+ *   Otherwise pnp resource will get enabled early and could prevent eisa
+ *   to be initialized.
+ * Also need to make sure pci_eisa_init_early() is called after
+ * x86/pci_subsys_init().
+ * So need to use subsys_initcall_sync with it.
+ */
+static int __init pci_eisa_init_early(void)
+{
+       struct pci_dev *dev = NULL;
+       int ret;
 
-static struct pci_driver __refdata pci_eisa_driver = {
-       .name           = "pci_eisa",
-       .id_table       = pci_eisa_pci_tbl,
-       .probe          = pci_eisa_init,
-};
+       for_each_pci_dev(dev)
+               if ((dev->class >> 8) == PCI_CLASS_BRIDGE_EISA) {
+                       ret = pci_eisa_init(dev);
+                       if (ret)
+                               return ret;
+               }
 
-static int __init pci_eisa_init_module (void)
-{
-       return pci_register_driver (&pci_eisa_driver);
+       return 0;
 }
-
-device_initcall(pci_eisa_init_module);
-MODULE_DEVICE_TABLE(pci, pci_eisa_pci_tbl);
+subsys_initcall_sync(pci_eisa_init_early);