linux-kernel - [PATCH] eeprom: at24: also select REGMAP

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Date:   Wed,  7 Jun 2023 19:54:24 -0700
From:   Randy Dunlap <rdunlap@...radead.org>
To:     linux-kernel@...r.kernel.org
Cc:     Randy Dunlap <rdunlap@...radead.org>,
        Heiner Kallweit <hkallweit1@...il.com>,
        Bartosz Golaszewski <brgl@...ev.pl>, linux-i2c@...r.kernel.org,
        Arnd Bergmann <arnd@...db.de>, Mark Brown <broonie@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Masahiro Yamada <masahiroy@...nel.org>
Subject: [PATCH] eeprom: at24: also select REGMAP

Selecting only REGMAP_I2C can leave REGMAP unset, causing build errors,
so also select REGMAP to prevent the build errors.

../drivers/misc/eeprom/at24.c:540:42: warning: 'struct regmap_config' declared inside parameter list will not be visible outside of this definition or declaration
  540 |                                   struct regmap_config *regmap_config)
../drivers/misc/eeprom/at24.c: In function 'at24_make_dummy_client':
../drivers/misc/eeprom/at24.c:552:18: error: implicit declaration of function 'devm_regmap_init_i2c' [-Werror=implicit-function-declaration]
  552 |         regmap = devm_regmap_init_i2c(dummy_client, regmap_config);
../drivers/misc/eeprom/at24.c:552:16: warning: assignment to 'struct regmap *' from 'int' makes pointer from integer without a cast [-Wint-conversion]
  552 |         regmap = devm_regmap_init_i2c(dummy_client, regmap_config);
../drivers/misc/eeprom/at24.c: In function 'at24_probe':
../drivers/misc/eeprom/at24.c:586:16: error: variable 'regmap_config' has initializer but incomplete type
  586 |         struct regmap_config regmap_config = { };
../drivers/misc/eeprom/at24.c:586:30: error: storage size of 'regmap_config' isn't known
  586 |         struct regmap_config regmap_config = { };
../drivers/misc/eeprom/at24.c:586:30: warning: unused variable 'regmap_config' [-Wunused-variable]

Fixes: 5c015258478e ("eeprom: at24: add basic regmap_i2c support")
Signed-off-by: Randy Dunlap <rdunlap@...radead.org>
Cc: Heiner Kallweit <hkallweit1@...il.com>
Cc: Bartosz Golaszewski <brgl@...ev.pl>
Cc: linux-i2c@...r.kernel.org
Cc: Arnd Bergmann <arnd@...db.de>
Cc: Mark Brown <broonie@...nel.org>
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc: Masahiro Yamada <masahiroy@...nel.org>
---
 drivers/misc/eeprom/Kconfig |    1 +
 1 file changed, 1 insertion(+)

diff -- a/drivers/misc/eeprom/Kconfig b/drivers/misc/eeprom/Kconfig
--- a/drivers/misc/eeprom/Kconfig
+++ b/drivers/misc/eeprom/Kconfig
@@ -6,6 +6,7 @@ config EEPROM_AT24
 	depends on I2C && SYSFS
 	select NVMEM
 	select NVMEM_SYSFS
+	select REGMAP
 	select REGMAP_I2C
 	help
 	  Enable this driver to get read/write support to most I2C EEPROMs