1 files changed, 71 insertions, 125 deletions

diff --git a/drivers/pci/pci-driver.c b/drivers/pci/pci-driver.c
index e65bf2b395aa..aac6de9568e5 100644
--- a/drivers/pci/pci-driver.c
+++ b/drivers/pci/pci-driver.c
@@ -7,7 +7,6 @@
 #include <linux/module.h>
 #include <linux/init.h>
 #include <linux/device.h>
-#include <linux/pci-dynids.h>
 #include "pci.h"
 
 /*
@@ -19,35 +18,11 @@
  */
 
 #ifdef CONFIG_HOTPLUG
-/**
- * pci_device_probe_dynamic()
- *
- * Walk the dynamic ID list looking for a match.
- * returns 0 and sets pci_dev->driver when drv claims pci_dev, else error.
- */
-static int
-pci_device_probe_dynamic(struct pci_driver *drv, struct pci_dev *pci_dev)
-{
-        int error = -ENODEV;
-        struct list_head *pos;
-        struct dynid *dynid;
 
-        spin_lock(&drv->dynids.lock);
-        list_for_each(pos, &drv->dynids.list) {
-                dynid = list_entry(pos, struct dynid, node);
-                if (pci_match_one_device(&dynid->id, pci_dev)) {
-                        spin_unlock(&drv->dynids.lock);
-                        error = drv->probe(pci_dev, &dynid->id);
-                        if (error >= 0) {
-                                pci_dev->driver = drv;
-                                return 0;
-                        }
-                        return error;
-                }
-        }
-        spin_unlock(&drv->dynids.lock);
-        return error;
-}
+struct pci_dynid {
+        struct list_head node;
+        struct pci_device_id id;
+};
 
 /**
  * store_new_id
@@ -58,8 +33,7 @@ pci_device_probe_dynamic(struct pci_driver *drv, struct pci_dev *pci_dev)
 static inline ssize_t
 store_new_id(struct device_driver *driver, const char *buf, size_t count)
 {
-        struct dynid *dynid;
-        struct bus_type * bus;
+        struct pci_dynid *dynid;
         struct pci_driver *pdrv = to_pci_driver(driver);
         __u32 vendor=PCI_ANY_ID, device=PCI_ANY_ID, subvendor=PCI_ANY_ID,
                 subdevice=PCI_ANY_ID, class=0, class_mask=0;
@@ -91,37 +65,22 @@ store_new_id(struct device_driver *driver, const char *buf, size_t count)
         list_add_tail(&pdrv->dynids.list, &dynid->node);
         spin_unlock(&pdrv->dynids.lock);
 
-        bus = get_bus(pdrv->driver.bus);
-        if (bus) {
-                if (get_driver(&pdrv->driver)) {
-                        down_write(&bus->subsys.rwsem);
-                        driver_attach(&pdrv->driver);
-                        up_write(&bus->subsys.rwsem);
-                        put_driver(&pdrv->driver);
-                }
-                put_bus(bus);
+        if (get_driver(&pdrv->driver)) {
+                driver_attach(&pdrv->driver);
+                put_driver(&pdrv->driver);
         }
 
         return count;
 }
-
 static DRIVER_ATTR(new_id, S_IWUSR, NULL, store_new_id);
-static inline void
-pci_init_dynids(struct pci_dynids *dynids)
-{
-        spin_lock_init(&dynids->lock);
-        INIT_LIST_HEAD(&dynids->list);
-}
 
 static void
 pci_free_dynids(struct pci_driver *drv)
 {
-        struct list_head *pos, *n;
-        struct dynid *dynid;
+        struct pci_dynid *dynid, *n;
 
         spin_lock(&drv->dynids.lock);
-        list_for_each_safe(pos, n, &drv->dynids.list) {
-                dynid = list_entry(pos, struct dynid, node);
+        list_for_each_entry_safe(dynid, n, &drv->dynids.list, node) {
                 list_del(&dynid->node);
                 kfree(dynid);
         }
@@ -138,83 +97,70 @@ pci_create_newid_file(struct pci_driver *drv)
         return error;
 }
 
-static int
-pci_bus_match_dynids(const struct pci_dev *pci_dev, struct pci_driver *pci_drv)
-{
-        struct list_head *pos;
-        struct dynid *dynid;
-
-        spin_lock(&pci_drv->dynids.lock);
-        list_for_each(pos, &pci_drv->dynids.list) {
-                dynid = list_entry(pos, struct dynid, node);
-                if (pci_match_one_device(&dynid->id, pci_dev)) {
-                        spin_unlock(&pci_drv->dynids.lock);
-                        return 1;
-                }
-        }
-        spin_unlock(&pci_drv->dynids.lock);
-        return 0;
-}
-
 #else /* !CONFIG_HOTPLUG */
-static inline int pci_device_probe_dynamic(struct pci_driver *drv, struct pci_dev *pci_dev)
-{
-        return -ENODEV;
-}
-static inline void pci_init_dynids(struct pci_dynids *dynids) {}
 static inline void pci_free_dynids(struct pci_driver *drv) {}
 static inline int pci_create_newid_file(struct pci_driver *drv)
 {
         return 0;
 }
-static inline int pci_bus_match_dynids(const struct pci_dev *pci_dev, struct pci_driver *pci_drv)
-{
-        return 0;
-}
 #endif
 
 /**
- * pci_match_device - Tell if a PCI device structure has a matching
- *                    PCI device id structure
+ * pci_match_id - See if a pci device matches a given pci_id table
  * @ids: array of PCI device id structures to search in
- * @dev: the PCI device structure to match against
- * 
+ * @dev: the PCI device structure to match against.
+ *
  * Used by a driver to check whether a PCI device present in the
- * system is in its list of supported devices.Returns the matching
+ * system is in its list of supported devices.  Returns the matching
  * pci_device_id structure or %NULL if there is no match.
+ *
+ * Depreciated, don't use this as it will not catch any dynamic ids
+ * that a driver might want to check for.
  */
-const struct pci_device_id *
-pci_match_device(const struct pci_device_id *ids, const struct pci_dev *dev)
+const struct pci_device_id *pci_match_id(const struct pci_device_id *ids,
+                                         struct pci_dev *dev)
 {
-        while (ids->vendor || ids->subvendor || ids->class_mask) {
-                if (pci_match_one_device(ids, dev))
-                        return ids;
-                ids++;
+        if (ids) {
+                while (ids->vendor || ids->subvendor || ids->class_mask) {
+                        if (pci_match_one_device(ids, dev))
+                                return ids;
+                        ids++;
+                }
         }
         return NULL;
 }
 
 /**
- * pci_device_probe_static()
- * 
- * returns 0 and sets pci_dev->driver when drv claims pci_dev, else error.
+ * pci_match_device - Tell if a PCI device structure has a matching
+ *                    PCI device id structure
+ * @ids: array of PCI device id structures to search in
+ * @dev: the PCI device structure to match against
+ * @drv: the PCI driver to match against
+ *
+ * Used by a driver to check whether a PCI device present in the
+ * system is in its list of supported devices.  Returns the matching
+ * pci_device_id structure or %NULL if there is no match.
  */
-static int
-pci_device_probe_static(struct pci_driver *drv, struct pci_dev *pci_dev)
-{                  
-        int error = -ENODEV;
+const struct pci_device_id *pci_match_device(struct pci_driver *drv,
+                                             struct pci_dev *dev)
+{
         const struct pci_device_id *id;
+        struct pci_dynid *dynid;
 
-        if (!drv->id_table)
-                return error;
-        id = pci_match_device(drv->id_table, pci_dev);
+        id = pci_match_id(drv->id_table, dev);
         if (id)
-                error = drv->probe(pci_dev, id);
-        if (error >= 0) {
-                pci_dev->driver = drv;
-                error = 0;
+                return id;
+
+        /* static ids didn't match, lets look at the dynamic ones */
+        spin_lock(&drv->dynids.lock);
+        list_for_each_entry(dynid, &drv->dynids.list, node) {
+                if (pci_match_one_device(&dynid->id, dev)) {
+                        spin_unlock(&drv->dynids.lock);
+                        return &dynid->id;
+                }
         }
-        return error;
+        spin_unlock(&drv->dynids.lock);
+        return NULL;
 }
 
 /**
@@ -225,13 +171,20 @@ pci_device_probe_static(struct pci_driver *drv, struct pci_dev *pci_dev)
  */
 static int
 __pci_device_probe(struct pci_driver *drv, struct pci_dev *pci_dev)
-{                  
+{
+        const struct pci_device_id *id;
         int error = 0;
 
         if (!pci_dev->driver && drv->probe) {
-                error = pci_device_probe_static(drv, pci_dev);
-                if (error == -ENODEV)
-                        error = pci_device_probe_dynamic(drv, pci_dev);
+                error = -ENODEV;
+
+                id = pci_match_device(drv, pci_dev);
+                if (id)
+                        error = drv->probe(pci_dev, id);
+                if (error >= 0) {
+                        pci_dev->driver = drv;
+                        error = 0;
+                }
         }
         return error;
 }
@@ -371,12 +324,6 @@ static struct kobj_type pci_driver_kobj_type = {
         .sysfs_ops = &pci_driver_sysfs_ops,
 };
 
-static int
-pci_populate_driver_dir(struct pci_driver *drv)
-{
-        return pci_create_newid_file(drv);
-}
-
 /**
  * pci_register_driver - register a new pci driver
  * @drv: the driver structure to register
@@ -401,13 +348,15 @@ int pci_register_driver(struct pci_driver *drv)
                 drv->driver.shutdown = pci_device_shutdown;
         drv->driver.owner = drv->owner;
         drv->driver.kobj.ktype = &pci_driver_kobj_type;
-        pci_init_dynids(&drv->dynids);
+
+        spin_lock_init(&drv->dynids.lock);
+        INIT_LIST_HEAD(&drv->dynids.list);
 
         /* register with core */
         error = driver_register(&drv->driver);
 
         if (!error)
-                pci_populate_driver_dir(drv);
+                error = pci_create_newid_file(drv);
 
         return error;
 }
@@ -463,21 +412,17 @@ pci_dev_driver(const struct pci_dev *dev)
  * system is in its list of supported devices.Returns the matching
  * pci_device_id structure or %NULL if there is no match.
  */
-static int pci_bus_match(struct device * dev, struct device_driver * drv) 
+static int pci_bus_match(struct device *dev, struct device_driver *drv)
 {
-        const struct pci_dev * pci_dev = to_pci_dev(dev);
-        struct pci_driver * pci_drv = to_pci_driver(drv);
-        const struct pci_device_id * ids = pci_drv->id_table;
+        struct pci_dev *pci_dev = to_pci_dev(dev);
+        struct pci_driver *pci_drv = to_pci_driver(drv);
         const struct pci_device_id *found_id;
 
-        if (!ids)
-                return 0;
-
-        found_id = pci_match_device(ids, pci_dev);
+        found_id = pci_match_device(pci_drv, pci_dev);
         if (found_id)
                 return 1;
 
-        return pci_bus_match_dynids(pci_dev, pci_drv);
+        return 0;
 }
 
 /**
@@ -536,6 +481,7 @@ static int __init pci_driver_init(void)
 
 postcore_initcall(pci_driver_init);
 
+EXPORT_SYMBOL(pci_match_id);
 EXPORT_SYMBOL(pci_match_device);
 EXPORT_SYMBOL(pci_register_driver);
 EXPORT_SYMBOL(pci_unregister_driver);