[ Upstream commit e70d8b287301eb6d7c7761c6171c56af62110ea3 ]

The compatibility "eeprom" attribute is currently root-only no matter what the configuration says. The "nvmem" attribute does respect the setting of the root_only configuration bit, so do the same for "eeprom".

Signed-off-by: Jean Delvare jdelvare@suse.de Fixes: b6c217ab9be6 ("nvmem: Add backwards compatibility support for older EEPROM drivers.") Reviewed-by: Bartosz Golaszewski bgolaszewski@baylibre.com Cc: Andrew Lunn andrew@lunn.ch Cc: Srinivas Kandagatla srinivas.kandagatla@linaro.org Cc: Arnd Bergmann arnd@arndb.de Link: https://lore.kernel.org/r/20190728184255.563332e6@endymion Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Sasha Levin sashal@kernel.org --- This is the backport of commit e70d8b287301 "nvmem: Use the same permissions for eeprom as for nvmem" for stable kernel branches 4.19, 4.14 and 4.9. Thanks.

drivers/nvmem/core.c | 15 +++++++++++---- 1 file changed, 11 insertions(+), 4 deletions(-)

--- linux-4.19.orig/drivers/nvmem/core.c 2019-09-17 11:34:16.250719885 +0200 +++ linux-4.19/drivers/nvmem/core.c 2019-09-17 16:09:45.146604199 +0200 @@ -415,10 +415,17 @@ static int nvmem_setup_compat(struct nvm if (!config->base_dev) return -EINVAL;

- if (nvmem->read_only) - nvmem->eeprom = bin_attr_ro_root_nvmem; - else - nvmem->eeprom = bin_attr_rw_root_nvmem; + if (nvmem->read_only) { + if (config->root_only) + nvmem->eeprom = bin_attr_ro_root_nvmem; + else + nvmem->eeprom = bin_attr_ro_nvmem; + } else { + if (config->root_only) + nvmem->eeprom = bin_attr_rw_root_nvmem; + else + nvmem->eeprom = bin_attr_rw_nvmem; + } nvmem->eeprom.attr.name = "eeprom"; nvmem->eeprom.size = nvmem->size; #ifdef CONFIG_DEBUG_LOCK_ALLOC