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| author |   Wolfram Sang <wsa+renesas@sang-engineering.com> | 2019-11-09 22:16:33 +0100 |
|---|---|---|
| committer |   Wolfram Sang <wsa@the-dreams.de> | 2019-11-15 22:04:48 +0100 |
| commit | 9af433840b3f61ac30d569a85234ab8f210f813a (patch) | |
| tree | 880c4c8215ad9f8bf2fbea85d59c2e23cf230264 /drivers/i2c | |
| parent | i2c: tegra: Use dma_request_chan() directly for channel request (diff) | |
| download | linux-dev-9af433840b3f61ac30d569a85234ab8f210f813a.tar.xz linux-dev-9af433840b3f61ac30d569a85234ab8f210f813a.zip | |
i2c: remove helpers for ref-counting clients
There are no in-tree users of these helpers anymore, and there
shouldn't. Most use cases went away once the driver model started to
refcount for us. There have been users like the media subsystem, but
they all switched to better refcounting methods meanwhile. Media did
this in 2008. Last user (IPMI) left 2018. Remove this cruft.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Reviewed-by: Jean Delvare <jdelvare@suse.de>
Tested-by: Luca Ceresoli <luca@lucaceresoli.net>
Reviewed-by: Luca Ceresoli <luca@lucaceresoli.net>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Diffstat (limited to 'drivers/i2c')
| -rw-r--r-- | drivers/i2c/i2c-core-base.c | 32 |
1 files changed, 0 insertions, 32 deletions
diff --git a/drivers/i2c/i2c-core-base.c b/drivers/i2c/i2c-core-base.c index 6a5183cffdfc..b594cb81cdce 100644 --- a/drivers/i2c/i2c-core-base.c +++ b/drivers/i2c/i2c-core-base.c @@ -1743,38 +1743,6 @@ EXPORT_SYMBOL(i2c_del_driver); /* ------------------------------------------------------------------------- */ -/** - * i2c_use_client - increments the reference count of the i2c client structure - * @client: the client being referenced - * - * Each live reference to a client should be refcounted. The driver model does - * that automatically as part of driver binding, so that most drivers don't - * need to do this explicitly: they hold a reference until they're unbound - * from the device. - * - * A pointer to the client with the incremented reference counter is returned. - */ -struct i2c_client *i2c_use_client(struct i2c_client *client) -{ - if (client && get_device(&client->dev)) - return client; - return NULL; -} -EXPORT_SYMBOL(i2c_use_client); - -/** - * i2c_release_client - release a use of the i2c client structure - * @client: the client being no longer referenced - * - * Must be called when a user of a client is finished with it. - */ -void i2c_release_client(struct i2c_client *client) -{ - if (client) - put_device(&client->dev); -} -EXPORT_SYMBOL(i2c_release_client); - struct i2c_cmd_arg { unsigned cmd; void *arg; |