From: Randy Dunlap <rdunlap@xxxxxxxxxxxxx> Fix Kconfig dependency warning and subsequent build errors caused by the Kconfig entry for EXTCON-FSA9480. It should not select REGMAP_I2C unless I2C is already set/enabled. WARNING: unmet direct dependencies detected for REGMAP_I2C Depends on [n]: I2C [=n] Selected by [y]: - EXTCON_FSA9480 [=y] && EXTCON [=y] && INPUT [=y] ../drivers/base/regmap/regmap-i2c.c: In function ‘regmap_smbus_byte_reg_read’: ../drivers/base/regmap/regmap-i2c.c:25:2: error: implicit declaration of function ‘i2c_smbus_read_byte_data’ [-Werror=implicit-function-declaration] ret = i2c_smbus_read_byte_data(i2c, reg); ^ ../drivers/base/regmap/regmap-i2c.c: In function ‘regmap_smbus_byte_reg_write’: ../drivers/base/regmap/regmap-i2c.c:43:2: error: implicit declaration of function ‘i2c_smbus_write_byte_data’ [-Werror=implicit-function-declaration] return i2c_smbus_write_byte_data(i2c, reg, val); ../drivers/base/regmap/regmap-i2c.c: In function ‘regmap_smbus_word_reg_read’: ../drivers/base/regmap/regmap-i2c.c:61:2: error: implicit declaration of function ‘i2c_smbus_read_word_data’ [-Werror=implicit-function-declaration] ret = i2c_smbus_read_word_data(i2c, reg); ../drivers/base/regmap/regmap-i2c.c: In function ‘regmap_smbus_word_reg_write’: ../drivers/base/regmap/regmap-i2c.c:79:2: error: implicit declaration of function ‘i2c_smbus_write_word_data’ [-Werror=implicit-function-declaration] return i2c_smbus_write_word_data(i2c, reg, val); ../drivers/base/regmap/regmap-i2c.c: In function ‘regmap_smbus_word_read_swapped’: ../drivers/base/regmap/regmap-i2c.c:97:2: error: implicit declaration of function ‘i2c_smbus_read_word_swapped’ [-Werror=implicit-function-declaration] ret = i2c_smbus_read_word_swapped(i2c, reg); ../drivers/base/regmap/regmap-i2c.c: In function ‘regmap_smbus_word_write_swapped’: ../drivers/base/regmap/regmap-i2c.c:115:2: error: implicit declaration of function ‘i2c_smbus_write_word_swapped’ [-Werror=implicit-function-declaration] return i2c_smbus_write_word_swapped(i2c, reg, val); ../drivers/base/regmap/regmap-i2c.c: In function ‘regmap_i2c_write’: ../drivers/base/regmap/regmap-i2c.c:129:2: error: implicit declaration of function ‘i2c_master_send’ [-Werror=implicit-function-declaration] ret = i2c_master_send(i2c, data, count); ../drivers/base/regmap/regmap-i2c.c: In function ‘regmap_i2c_gather_write’: ../drivers/base/regmap/regmap-i2c.c:150:2: error: implicit declaration of function ‘i2c_check_functionality’ [-Werror=implicit-function-declaration] if (!i2c_check_functionality(i2c->adapter, I2C_FUNC_NOSTART)) ../drivers/base/regmap/regmap-i2c.c:163:2: error: implicit declaration of function ‘i2c_transfer’ [-Werror=implicit-function-declaration] ret = i2c_transfer(i2c->adapter, xfer, 2); ../drivers/base/regmap/regmap-i2c.c: In function ‘regmap_i2c_smbus_i2c_write’: ../drivers/base/regmap/regmap-i2c.c:218:2: error: implicit declaration of function ‘i2c_smbus_write_i2c_block_data’ [-Werror=implicit-function-declaration] return i2c_smbus_write_i2c_block_data(i2c, ((u8 *)data)[0], count, ../drivers/base/regmap/regmap-i2c.c: In function ‘regmap_i2c_smbus_i2c_read’: ../drivers/base/regmap/regmap-i2c.c:233:2: error: implicit declaration of function ‘i2c_smbus_read_i2c_block_data’ [-Werror=implicit-function-declaration] ret = i2c_smbus_read_i2c_block_data(i2c, ((u8 *)reg)[0], val_size, val); ../drivers/extcon/extcon-fsa9480.c: In function ‘fsa9480_module_init’: ../drivers/extcon/extcon-fsa9480.c:383:2: error: implicit declaration of function ‘i2c_add_driver’ [-Werror=implicit-function-declaration] return i2c_add_driver(&fsa9480_i2c_driver); ../drivers/extcon/extcon-fsa9480.c: In function ‘fsa9480_module_exit’: ../drivers/extcon/extcon-fsa9480.c:389:2: error: implicit declaration of function ‘i2c_del_driver’ [-Werror=implicit-function-declaration] i2c_del_driver(&fsa9480_i2c_driver); Signed-off-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx> Cc: Tomasz Figa <tomasz.figa@xxxxxxxxx> Cc: MyungJoo Ham <myungjoo.ham@xxxxxxxxxxx> Cc: Chanwoo Choi <cw00.choi@xxxxxxxxxxx> --- Found in mmotm; applies to linux-next. To extcon maintainers: there are a few more extcon driver Kconfig entries that seem to have this same problem of selecting REGMAP_I2C without checking that I2C is set/enabled. drivers/extcon/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- mmotm-2019-0625-1620.orig/drivers/extcon/Kconfig +++ mmotm-2019-0625-1620/drivers/extcon/Kconfig @@ -39,7 +39,7 @@ config EXTCON_AXP288 config EXTCON_FSA9480 tristate "FSA9480 EXTCON Support" - depends on INPUT + depends on INPUT && I2C select IRQ_DOMAIN select REGMAP_I2C help
