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eeprom: make older eeprom drivers select NVMEM_SYSFS

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misc/eeprom/{at24,at25,eeprom_93xx46} drivers all register their
corresponding devices in the nvmem framework in compat mode which requires
nvmem sysfs interface to be present. The latter, however, has been split
out from nvmem under a separate Kconfig in commit ae0c2d7255 ("nvmem:
core: add NVMEM_SYSFS Kconfig"). As a result, probing certain I2C-attached
EEPROMs now fails with

  at24: probe of 0-0050 failed with error -38

because of a stub implementation of nvmem_sysfs_setup_compat()
in drivers/nvmem/nvmem.h. Update the nvmem dependency for these drivers
so they could load again:

  at24 0-0050: 32768 byte 24c256 EEPROM, writable, 64 bytes/write

Cc: Adrian Bunk <bunk@kernel.org>
Cc: Bartosz Golaszewski <brgl@bgdev.pl>
Cc: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Cc: stable@vger.kernel.org # v5.2+
Signed-off-by: Arseny Solokha <asolokha@kb.kras.ru>
Link: https://lore.kernel.org/r/20190716111236.27803-1-asolokha@kb.kras.ru
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Arseny Solokha 2019-07-16 18:12:36 +07:00 committed by Greg Kroah-Hartman
parent 10b0f1c227
commit 1b5621832f
1 changed files with 3 additions and 0 deletions
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3
drivers/misc/eeprom/Kconfig
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@ -5,6 +5,7 @@ config EEPROM_AT24
tristate "I2C EEPROMs / RAMs / ROMs from most vendors"
depends on I2C && SYSFS
select NVMEM
select NVMEM_SYSFS
select REGMAP_I2C
help
Enable this driver to get read/write support to most I2C EEPROMs
@ -34,6 +35,7 @@ config EEPROM_AT25
tristate "SPI EEPROMs from most vendors"
depends on SPI && SYSFS
select NVMEM
select NVMEM_SYSFS
help
Enable this driver to get read/write support to most SPI EEPROMs,
after you configure the board init code to know about each eeprom
@ -80,6 +82,7 @@ config EEPROM_93XX46
depends on SPI && SYSFS
select REGMAP
select NVMEM
select NVMEM_SYSFS
help
Driver for the microwire EEPROM chipsets 93xx46x. The driver
supports both read and write commands and also the command to