[RFC patch 1/3] remove pci_driver.owner and .name fields
From: Laurent riffard
Date: Wed Oct 26 2005 - 15:54:49 EST
pci_driver.name and .owner are duplicates of pci_driver.driver.name
and .owner.
This patch prepares the core pci code for future removal of the 2
pci_driver's fields, but actually do not remove them.
Driver developpers should set pci_driver.driver.name, while
pci_driver.driver.owner will be set by pci_register_driver.
Signed-off-by: Laurent Riffard <laurent.riffard@xxxxxxx>
--
drivers/ide/setup-pci.c | 10 ++++++----
drivers/pci/pci-driver.c | 13 +++++++++----
include/linux/ide.h | 2 ++
include/linux/pci.h | 11 +++++++++--
4 files changed, 26 insertions(+), 10 deletions(-)
Index: linux-2.6-stable/include/linux/pci.h
===================================================================
--- linux-2.6-stable.orig/include/linux/pci.h
+++ linux-2.6-stable/include/linux/pci.h
@@ -664,6 +664,12 @@
struct module;
struct pci_driver {
struct list_head node;
+ /*
+ * Please do not use the 2 following fields, they are planned for
+ * deletion.
+ * Use driver.name instead of .name.
+ * The field driver.owner will be set by pci_register_driver.
+ */
char *name;
struct module *owner;
const struct pci_device_id *id_table; /* must be non-NULL for probe to be called */
@@ -857,7 +863,8 @@
void pci_enable_bridges(struct pci_bus *bus);
/* New-style probing supporting hot-pluggable devices */
-int pci_register_driver(struct pci_driver *);
+int __pci_register_driver(struct pci_driver *, struct module *);
+#define pci_register_driver(d) __pci_register_driver(d, THIS_MODULE)
void pci_unregister_driver(struct pci_driver *);
void pci_remove_behind_bridge(struct pci_dev *);
struct pci_driver *pci_dev_driver(const struct pci_dev *);
@@ -957,7 +964,7 @@
static inline void pci_disable_device(struct pci_dev *dev) { }
static inline int pci_set_dma_mask(struct pci_dev *dev, u64 mask) { return -EIO; }
static inline int pci_assign_resource(struct pci_dev *dev, int i) { return -EBUSY;}
-static inline int pci_register_driver(struct pci_driver *drv) { return 0;}
+static inline int __pci_register_driver(struct pci_driver *drv, struct module *owner) { return 0;}
static inline void pci_unregister_driver(struct pci_driver *drv) { }
static inline int pci_find_capability (struct pci_dev *dev, int cap) {return 0; }
static inline int pci_find_ext_capability (struct pci_dev *dev, int cap) {return 0; }
Index: linux-2.6-stable/drivers/pci/pci-driver.c
===================================================================
--- linux-2.6-stable.orig/drivers/pci/pci-driver.c
+++ linux-2.6-stable/drivers/pci/pci-driver.c
@@ -327,18 +327,23 @@
/**
* pci_register_driver - register a new pci driver
* @drv: the driver structure to register
+ * @owner: owner module of drv
*
* Adds the driver structure to the list of registered drivers.
* Returns a negative value on error, otherwise 0.
* If no error occurred, the driver remains registered even if
* no device was claimed during registration.
*/
-int pci_register_driver(struct pci_driver *drv)
+int __pci_register_driver(struct pci_driver *drv, struct module *owner)
{
int error;
/* initialize common driver fields */
- drv->driver.name = drv->name;
+ if (drv->name) {
+ /* backward compatibility until all pci_driver are converted to
+ * use pci_driver.driver.name instead of pci_driver.name */
+ drv->driver.name = drv->name;
+ }
drv->driver.bus = &pci_bus_type;
drv->driver.probe = pci_device_probe;
drv->driver.remove = pci_device_remove;
@@ -346,7 +351,7 @@
* the pci shutdown function, this test can go away. */
if (!drv->driver.shutdown)
drv->driver.shutdown = pci_device_shutdown;
- drv->driver.owner = drv->owner;
+ drv->driver.owner = owner;
drv->driver.kobj.ktype = &pci_driver_kobj_type;
spin_lock_init(&drv->dynids.lock);
@@ -483,7 +488,7 @@
EXPORT_SYMBOL(pci_match_id);
EXPORT_SYMBOL(pci_match_device);
-EXPORT_SYMBOL(pci_register_driver);
+EXPORT_SYMBOL(__pci_register_driver);
EXPORT_SYMBOL(pci_unregister_driver);
EXPORT_SYMBOL(pci_dev_driver);
EXPORT_SYMBOL(pci_bus_type);
Index: linux-2.6-stable/drivers/ide/setup-pci.c
===================================================================
--- linux-2.6-stable.orig/drivers/ide/setup-pci.c
+++ linux-2.6-stable/drivers/ide/setup-pci.c
@@ -787,8 +787,9 @@
static LIST_HEAD(ide_pci_drivers);
/*
- * ide_register_pci_driver - attach IDE driver
+ * __ide_register_pci_driver - attach IDE driver
* @driver: pci driver
+ * @module: owner module of the driver
*
* Registers a driver with the IDE layer. The IDE layer arranges that
* boot time setup is done in the expected device order and then
@@ -801,15 +802,16 @@
* Returns are the same as for pci_register_driver
*/
-int ide_pci_register_driver(struct pci_driver *driver)
+int __ide_pci_register_driver(struct pci_driver *driver, struct module *module)
{
if(!pre_init)
- return pci_module_init(driver);
+ return __pci_register_driver(driver, module);
+ driver->driver.owner = module;
list_add_tail(&driver->node, &ide_pci_drivers);
return 0;
}
-EXPORT_SYMBOL_GPL(ide_pci_register_driver);
+EXPORT_SYMBOL_GPL(__ide_pci_register_driver);
/**
* ide_unregister_pci_driver - unregister an IDE driver
Index: linux-2.6-stable/include/linux/ide.h
===================================================================
--- linux-2.6-stable.orig/include/linux/ide.h
+++ linux-2.6-stable/include/linux/ide.h
@@ -1324,6 +1324,8 @@
extern int ideprobe_init(void);
extern void ide_scan_pcibus(int scan_direction) __init;
+extern int __ide_pci_register_driver(struct pci_driver *driver, struct module *owner);
+#define ide_pci_register_driver(d) __ide_pci_register_driver(d, THIS_MODULE)
extern int ide_pci_register_driver(struct pci_driver *driver);
extern void ide_pci_unregister_driver(struct pci_driver *driver);
void ide_pci_setup_ports(struct pci_dev *, struct ide_pci_device_s *, int, ata_index_t *);
--
-
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