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| author | Yicong Yang <yangyicong@hisilicon.com> | 2021-04-08 14:17:17 +0300 |
|---|---|---|
| committer | Wolfram Sang <wsa@kernel.org> | 2021-04-10 22:53:49 +0300 |
| commit | 07740c92ae57ca21204f1e0c6f59272cdf3190cc (patch) | |
| tree | 3dabbe4ca22818052082e66a9fd208fa5dc446bc /drivers/i2c/i2c-core-base.c | |
| parent | 2375843b50d6139b82648499daaad2034576905b (diff) | |
| download | linux-07740c92ae57ca21204f1e0c6f59272cdf3190cc.tar.xz | |
i2c: core: add managed function for adding i2c adapters
Some I2C controller drivers will only unregister the I2C
adapter in their .remove() callback, which can be done
by simply using a managed variant to add the I2C adapter.
So add the managed functions for adding the I2C adapter.
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Yicong Yang <yangyicong@hisilicon.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Diffstat (limited to 'drivers/i2c/i2c-core-base.c')
| -rw-r--r-- | drivers/i2c/i2c-core-base.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/drivers/i2c/i2c-core-base.c b/drivers/i2c/i2c-core-base.c index c81cc9a09877..c4c28b585b50 100644 --- a/drivers/i2c/i2c-core-base.c +++ b/drivers/i2c/i2c-core-base.c @@ -1693,6 +1693,32 @@ void i2c_del_adapter(struct i2c_adapter *adap) } EXPORT_SYMBOL(i2c_del_adapter); +static void devm_i2c_del_adapter(void *adapter) +{ + i2c_del_adapter(adapter); +} + +/** + * devm_i2c_add_adapter - device-managed variant of i2c_add_adapter() + * @dev: managing device for adding this I2C adapter + * @adapter: the adapter to add + * Context: can sleep + * + * Add adapter with dynamic bus number, same with i2c_add_adapter() + * but the adapter will be auto deleted on driver detach. + */ +int devm_i2c_add_adapter(struct device *dev, struct i2c_adapter *adapter) +{ + int ret; + + ret = i2c_add_adapter(adapter); + if (ret) + return ret; + + return devm_add_action_or_reset(dev, devm_i2c_del_adapter, adapter); +} +EXPORT_SYMBOL_GPL(devm_i2c_add_adapter); + static void i2c_parse_timing(struct device *dev, char *prop_name, u32 *cur_val_p, u32 def_val, bool use_def) { |