nvmem: Use the same permissions for eeprom as for nvmem

commit e70d8b287301eb6d7c7761c6171c56af62110ea3 upstream.

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>

diff --git a/drivers/nvmem/core.c b/drivers/nvmem/core.c
index dba3f4d0a63db2c94e1f69a351a02fed8bcec6c4..b414d9d207d4582907a0c164076d5cb477e596c3 100644 (file)
--- a/drivers/nvmem/core.c
+++ b/drivers/nvmem/core.c
@@ -407,10 +407,17 @@ static int nvmem_setup_compat(struct nvmem_device *nvmem,
        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