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device connection: Remove device_connection_find()

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Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://lore.kernel.org/r/20200904125123.83725-2-heikki.krogerus@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Heikki Krogerus 2020-09-04 15:51:20 +03:00 committed by Greg Kroah-Hartman
parent 51fae39bd5
commit 180c284ce4
2 changed files with 0 additions and 75 deletions
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73
drivers/base/devcon.c
View file

@ -133,79 +133,6 @@ void *device_connection_find_match(struct device *dev, const char *con_id,
}
EXPORT_SYMBOL_GPL(device_connection_find_match);
extern struct bus_type platform_bus_type;
extern struct bus_type pci_bus_type;
extern struct bus_type i2c_bus_type;
extern struct bus_type spi_bus_type;
static struct bus_type *generic_match_buses[] = {
&platform_bus_type,
#ifdef CONFIG_PCI
&pci_bus_type,
#endif
#ifdef CONFIG_I2C
&i2c_bus_type,
#endif
#ifdef CONFIG_SPI_MASTER
&spi_bus_type,
#endif
NULL,
};
static void *device_connection_fwnode_match(struct device_connection *con)
{
struct bus_type *bus;
struct device *dev;
for (bus = generic_match_buses[0]; bus; bus++) {
dev = bus_find_device_by_fwnode(bus, con->fwnode);
if (dev && !strncmp(dev_name(dev), con->id, strlen(con->id)))
return dev;
put_device(dev);
}
return NULL;
}
/* This tries to find the device from the most common bus types by name. */
static void *generic_match(struct device_connection *con, int ep, void *data)
{
struct bus_type *bus;
struct device *dev;
if (con->fwnode)
return device_connection_fwnode_match(con);
for (bus = generic_match_buses[0]; bus; bus++) {
dev = bus_find_device_by_name(bus, NULL, con->endpoint[ep]);
if (dev)
return dev;
}
/*
* We only get called if a connection was found, tell the caller to
* wait for the other device to show up.
*/
return ERR_PTR(-EPROBE_DEFER);
}
/**
* device_connection_find - Find two devices connected together
* @dev: Device with the connection
* @con_id: Identifier for the connection
*
* Find a connection with unique identifier @con_id between @dev and
* another device. On success returns handle to the device that is connected
* to @dev, with the reference count for the found device incremented. Returns
* NULL if no matching connection was found, or ERR_PTR(-EPROBE_DEFER) when a
* connection was found but the other device has not been enumerated yet.
*/
struct device *device_connection_find(struct device *dev, const char *con_id)
{
return device_connection_find_match(dev, con_id, NULL, generic_match);
}
EXPORT_SYMBOL_GPL(device_connection_find);
/**
* device_connection_add - Register a connection description
* @con: The connection description to be registered

2
include/linux/device.h
View file

@ -319,8 +319,6 @@ void *fwnode_connection_find_match(struct fwnode_handle *fwnode,
void *device_connection_find_match(struct device *dev, const char *con_id,
void *data, devcon_match_fn_t match);
struct device *device_connection_find(struct device *dev, const char *con_id);
void device_connection_add(struct device_connection *con);
void device_connection_remove(struct device_connection *con);