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i2c: Remove I2C_COMPAT config symbol and related code

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This code was added with 2bb5095aff ("i2c: Provide compatibility links
for i2c adapters"). Commit message stated: Provide compatibility links
for [...] the time being. We will remove them after a long transition
period.
15 years should have been a long enough transition period.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
This commit is contained in:
Heiner Kallweit 2024-08-21 22:13:04 +02:00 • committed by Wolfram Sang
parent 84294c81a5
commit 7e722083fc
2 changed files with 0 additions and 39 deletions
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8
drivers/i2c/Kconfig
View file

@ -40,14 +40,6 @@ config I2C_BOARDINFO
bool bool
default y default y
config I2C_COMPAT
bool "Enable compatibility bits for old user-space"
default y
help
Say Y here if you intend to run lm-sensors 3.1.1 or older, or any
other user-space package which expects i2c adapters to be class
devices. If you don't know, say Y.
config I2C_CHARDEV config I2C_CHARDEV
tristate "I2C device interface" tristate "I2C device interface"
help help

31
drivers/i2c/i2c-core-base.c
View file

@ -1395,10 +1395,6 @@ struct i2c_adapter *i2c_verify_adapter(struct device *dev)
} }
EXPORT_SYMBOL(i2c_verify_adapter); EXPORT_SYMBOL(i2c_verify_adapter);
#ifdef CONFIG_I2C_COMPAT
static struct class_compat *i2c_adapter_compat_class;
#endif
static void i2c_scan_static_board_info(struct i2c_adapter *adapter) static void i2c_scan_static_board_info(struct i2c_adapter *adapter)
{ {
struct i2c_devinfo *devinfo; struct i2c_devinfo *devinfo;
@ -1575,14 +1571,6 @@ static int i2c_register_adapter(struct i2c_adapter *adap)
dev_dbg(&adap->dev, "adapter [%s] registered\n", adap->name); dev_dbg(&adap->dev, "adapter [%s] registered\n", adap->name);
#ifdef CONFIG_I2C_COMPAT
res = class_compat_create_link(i2c_adapter_compat_class, &adap->dev,
adap->dev.parent);
if (res)
dev_warn(&adap->dev,
"Failed to create compatibility class link\n");
#endif
/* create pre-declared device nodes */ /* create pre-declared device nodes */
of_i2c_register_devices(adap); of_i2c_register_devices(adap);
i2c_acpi_install_space_handler(adap); i2c_acpi_install_space_handler(adap);
@ -1789,11 +1777,6 @@ void i2c_del_adapter(struct i2c_adapter *adap)
device_for_each_child(&adap->dev, NULL, __unregister_client); device_for_each_child(&adap->dev, NULL, __unregister_client);
device_for_each_child(&adap->dev, NULL, __unregister_dummy); device_for_each_child(&adap->dev, NULL, __unregister_dummy);
#ifdef CONFIG_I2C_COMPAT
class_compat_remove_link(i2c_adapter_compat_class, &adap->dev,
adap->dev.parent);
#endif
/* device name is gone after device_unregister */ /* device name is gone after device_unregister */
dev_dbg(&adap->dev, "adapter [%s] unregistered\n", adap->name); dev_dbg(&adap->dev, "adapter [%s] unregistered\n", adap->name);
@ -2102,13 +2085,6 @@ static int __init i2c_init(void)
i2c_debugfs_root = debugfs_create_dir("i2c", NULL); i2c_debugfs_root = debugfs_create_dir("i2c", NULL);
#ifdef CONFIG_I2C_COMPAT
i2c_adapter_compat_class = class_compat_register("i2c-adapter");
if (!i2c_adapter_compat_class) {
retval = -ENOMEM;
goto bus_err;
}
#endif
retval = i2c_add_driver(&dummy_driver); retval = i2c_add_driver(&dummy_driver);
if (retval) if (retval)
goto class_err; goto class_err;
@ -2121,10 +2097,6 @@ static int __init i2c_init(void)
return 0; return 0;
class_err: class_err:
#ifdef CONFIG_I2C_COMPAT
class_compat_unregister(i2c_adapter_compat_class);
bus_err:
#endif
is_registered = false; is_registered = false;
bus_unregister(&i2c_bus_type); bus_unregister(&i2c_bus_type);
return retval; return retval;
@ -2137,9 +2109,6 @@ static void __exit i2c_exit(void)
if (IS_ENABLED(CONFIG_OF_DYNAMIC)) if (IS_ENABLED(CONFIG_OF_DYNAMIC))
WARN_ON(of_reconfig_notifier_unregister(&i2c_of_notifier)); WARN_ON(of_reconfig_notifier_unregister(&i2c_of_notifier));
i2c_del_driver(&dummy_driver); i2c_del_driver(&dummy_driver);
#ifdef CONFIG_I2C_COMPAT
class_compat_unregister(i2c_adapter_compat_class);
#endif
debugfs_remove_recursive(i2c_debugfs_root); debugfs_remove_recursive(i2c_debugfs_root);
bus_unregister(&i2c_bus_type); bus_unregister(&i2c_bus_type);
tracepoint_synchronize_unregister(); tracepoint_synchronize_unregister();