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i2c: Export i2c_match_id() for direct use by device drivers 

When there was no other way to match a I2C device to driver i2c_match_id()
was exclusively used.  However, now there are other types of tables which
are commonly supplied, matching on an i2c_device_id table is used less
frequently.  Instead of _always_ calling i2c_match_id() from within the
framework, we only need to do so from drivers which have no other way of
matching.  This patch makes i2c_match_id() available to the aforementioned
device drivers.

Acked-by: Grant Likely <grant.likely@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Tested-by: Kieran Bingham <kieran@bingham.xyz>
Reviewed-by: Javier Martinez Canillas <javier@osg.samsung.com>
Tested-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Kieran Bingham <kieran@bingham.xyz>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
zero-colors
Lee Jones 2016-11-07 12:47:40 +00:00 committed by Wolfram Sang
parent da10c06a04
commit 5f441fcaa3
2 changed files with 4 additions and 1 deletions
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3
drivers/i2c/i2c-core.c
View File

@ -676,7 +676,7 @@ static inline int i2c_acpi_install_space_handler(struct i2c_adapter *adapter)
/* ------------------------------------------------------------------------- */
static const struct i2c_device_id *i2c_match_id(const struct i2c_device_id *id,
const struct i2c_device_id *i2c_match_id(const struct i2c_device_id *id,
const struct i2c_client *client)
{
if (!(id && client))
@ -689,6 +689,7 @@ static const struct i2c_device_id *i2c_match_id(const struct i2c_device_id *id,
}
return NULL;
}
EXPORT_SYMBOL_GPL(i2c_match_id);
static int i2c_device_match(struct device *dev, struct device_driver *drv)
{

2
include/linux/i2c.h
View File

@ -243,6 +243,8 @@ struct i2c_client {
extern struct i2c_client *i2c_verify_client(struct device *dev);
extern struct i2c_adapter *i2c_verify_adapter(struct device *dev);
extern const struct i2c_device_id *i2c_match_id(const struct i2c_device_id *id,
const struct i2c_client *client);
static inline struct i2c_client *kobj_to_i2c_client(struct kobject *kobj)
{