quiesce EDAC initialisation on desktop/mobile i7

[sfrench/cifs-2.6.git] / drivers / edac / i7core_edac.c

diff --git a/drivers/edac/i7core_edac.c b/drivers/edac/i7core_edac.c
index 6b8b7b41ec5f8bbad42647792417ce64f433d117..e0187d16dd7c53fd240b58d62005e4c17df14bc4 100644 (file)
--- a/drivers/edac/i7core_edac.c
+++ b/drivers/edac/i7core_edac.c
@@ -1233,10 +1233,28 @@ static void __init i7core_xeon_pci_fixup(struct pci_id_table *table)
                        for (i = 0; i < MAX_SOCKET_BUSES; i++)
                                pcibios_scan_specific_bus(255-i);
                }
+               pci_dev_put(pdev);
                table++;
        }
 }
 
+static unsigned i7core_pci_lastbus(void)
+{
+       int last_bus = 0, bus;
+       struct pci_bus *b = NULL;
+
+       while ((b = pci_find_next_bus(b)) != NULL) {
+               bus = b->number;
+               debugf0("Found bus %d\n", bus);
+               if (bus > last_bus)
+                       last_bus = bus;
+       }
+
+       debugf0("Last bus %d\n", last_bus);
+
+       return last_bus;
+}
+
 /*
  *     i7core_get_devices      Find and perform 'get' operation on the MCH's
  *                     device/functions we want to reference for this driver
@@ -1244,7 +1262,8 @@ static void __init i7core_xeon_pci_fixup(struct pci_id_table *table)
  *                     Need to 'get' device 16 func 1 and func 2
  */
 int i7core_get_onedevice(struct pci_dev **prev, int devno,
-                        struct pci_id_descr *dev_descr, unsigned n_devs)
+                        struct pci_id_descr *dev_descr, unsigned n_devs,
+                        unsigned last_bus)
 {
        struct i7core_dev *i7core_dev;
 
@@ -1281,7 +1300,7 @@ int i7core_get_onedevice(struct pci_dev **prev, int devno,
                if (devno == 0)
                        return -ENODEV;
 
-               i7core_printk(KERN_ERR,
+               i7core_printk(KERN_INFO,
                        "Device not found: dev %02x.%d PCI ID %04x:%04x\n",
                        dev_descr->dev, dev_descr->func,
                        PCI_VENDOR_ID_INTEL, dev_descr->dev_id);
@@ -1291,10 +1310,7 @@ int i7core_get_onedevice(struct pci_dev **prev, int devno,
        }
        bus = pdev->bus->number;
 
-       if (bus == 0x3f)
-               socket = 0;
-       else
-               socket = 255 - bus;
+       socket = last_bus - bus;
 
        i7core_dev = get_i7core_dev(socket);
        if (!i7core_dev) {
@@ -1358,17 +1374,21 @@ int i7core_get_onedevice(struct pci_dev **prev, int devno,
 
 static int i7core_get_devices(struct pci_id_table *table)
 {
-       int i, rc;
+       int i, rc, last_bus;
        struct pci_dev *pdev = NULL;
        struct pci_id_descr *dev_descr;
 
+       last_bus = i7core_pci_lastbus();
+
        while (table && table->descr) {
                dev_descr = table->descr;
                for (i = 0; i < table->n_devs; i++) {
                        pdev = NULL;
                        do {
-                               rc = i7core_get_onedevice(&pdev, i, &dev_descr[i],
-                                                         table->n_devs);
+                               rc = i7core_get_onedevice(&pdev, i,
+                                                         &dev_descr[i],
+                                                         table->n_devs,
+                                                         last_bus);
                                if (rc < 0) {
                                        if (i == 0) {
                                                i = table->n_devs;
@@ -1927,21 +1947,26 @@ fail:
  *             0 for FOUND a device
  *             < 0 for error code
  */
+
+static int probed = 0;
+
 static int __devinit i7core_probe(struct pci_dev *pdev,
                                  const struct pci_device_id *id)
 {
-       int dev_idx = id->driver_data;
        int rc;
        struct i7core_dev *i7core_dev;
 
+       /* get the pci devices we want to reserve for our use */
+       mutex_lock(&i7core_edac_lock);
+
        /*
         * All memory controllers are allocated at the first pass.
         */
-       if (unlikely(dev_idx >= 1))
+       if (unlikely(probed >= 1)) {
+               mutex_unlock(&i7core_edac_lock);
                return -EINVAL;
-
-       /* get the pci devices we want to reserve for our use */
-       mutex_lock(&i7core_edac_lock);
+       }
+       probed++;
 
        rc = i7core_get_devices(pci_dev_table);
        if (unlikely(rc < 0))
@@ -2013,6 +2038,8 @@ static void __devexit i7core_remove(struct pci_dev *pdev)
                                      i7core_dev->socket);
                }
        }
+       probed--;
+
        mutex_unlock(&i7core_edac_lock);
 }