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Subject[PATCH 01/27] drivercore: Add of_match_table to the common device drivers
Date
OF-style matching can be available to any device, on any type of bus.
This patch allows any driver to provide an OF match table when CONFIG_OF
is enabled so that drivers can be bound against devices described in
the device tree.

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
---

arch/powerpc/kernel/ibmebus.c | 2 +-
drivers/macintosh/macio_asic.c | 5 ++---
drivers/of/platform.c | 7 ++++---
include/linux/device.h | 4 ++++
4 files changed, 11 insertions(+), 7 deletions(-)

diff --git a/arch/powerpc/kernel/ibmebus.c b/arch/powerpc/kernel/ibmebus.c
index 797e9ac..62ded8b 100644
--- a/arch/powerpc/kernel/ibmebus.c
+++ b/arch/powerpc/kernel/ibmebus.c
@@ -201,7 +201,7 @@ static int ibmebus_create_devices(const struct of_device_id *matches)
int ibmebus_register_driver(struct of_platform_driver *drv)
{
/* If the driver uses devices that ibmebus doesn't know, add them */
- ibmebus_create_devices(drv->match_table);
+ ibmebus_create_devices(drv->driver.of_match_table);

return of_register_driver(drv, &ibmebus_bus_type);
}
diff --git a/drivers/macintosh/macio_asic.c b/drivers/macintosh/macio_asic.c
index 48a5f04..e3ba1d8 100644
--- a/drivers/macintosh/macio_asic.c
+++ b/drivers/macintosh/macio_asic.c
@@ -40,8 +40,7 @@ static struct macio_chip *macio_on_hold;
static int macio_bus_match(struct device *dev, struct device_driver *drv)
{
struct macio_dev * macio_dev = to_macio_device(dev);
- struct macio_driver * macio_drv = to_macio_driver(drv);
- const struct of_device_id * matches = macio_drv->match_table;
+ const struct of_device_id * matches = drv->of_match_table;

if (!matches)
return 0;
@@ -84,7 +83,7 @@ static int macio_device_probe(struct device *dev)

macio_dev_get(macio_dev);

- match = of_match_device(drv->match_table, &macio_dev->ofdev);
+ match = of_match_device(drv->driver.of_match_table, &macio_dev->ofdev);
if (match)
error = drv->probe(macio_dev, match);
if (error)
diff --git a/drivers/of/platform.c b/drivers/of/platform.c
index d58ade1..9fd7f7d 100644
--- a/drivers/of/platform.c
+++ b/drivers/of/platform.c
@@ -22,8 +22,7 @@ extern struct device_attribute of_platform_device_attrs[];
static int of_platform_bus_match(struct device *dev, struct device_driver *drv)
{
struct of_device *of_dev = to_of_device(dev);
- struct of_platform_driver *of_drv = to_of_platform_driver(drv);
- const struct of_device_id *matches = of_drv->match_table;
+ const struct of_device_id *matches = drv->of_match_table;

if (!matches)
return 0;
@@ -46,7 +45,7 @@ static int of_platform_device_probe(struct device *dev)

of_dev_get(of_dev);

- match = of_match_device(drv->match_table, of_dev);
+ match = of_match_device(drv->driver.of_match_table, of_dev);
if (match)
error = drv->probe(of_dev, match);
if (error)
@@ -391,6 +390,8 @@ int of_register_driver(struct of_platform_driver *drv, struct bus_type *bus)
drv->driver.name = drv->name;
if (!drv->driver.owner)
drv->driver.owner = drv->owner;
+ if (!drv->driver.of_match_table)
+ drv->driver.of_match_table = drv->match_table;
drv->driver.bus = bus;

/* register with core */
diff --git a/include/linux/device.h b/include/linux/device.h
index 7a968bd..cd7534c 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -129,6 +129,10 @@ struct device_driver {

bool suppress_bind_attrs; /* disables bind/unbind via sysfs */

+#if defined(CONFIG_OF)
+ const struct of_device_id *of_match_table;
+#endif
+
int (*probe) (struct device *dev);
int (*remove) (struct device *dev);
void (*shutdown) (struct device *dev);


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