The patch below does not apply to the 4.19-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to <stable@xxxxxxxxxxxxxxx>.
thanks,
greg k-h
------------------ original commit in Linus's tree ------------------
>From 25e5ef302c24a6fead369c0cfe88c073d7b97ca8 Mon Sep 17 00:00:00 2001
From: Jean Delvare <jdelvare@xxxxxxx>
Date: Sun, 28 Jul 2019 18:41:38 +0200
Subject: [PATCH] eeprom: at24: make spd world-readable again
The integration of the at24 driver into the nvmem framework broke the
world-readability of spd EEPROMs. Fix it.
Signed-off-by: Jean Delvare <jdelvare@xxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx
Fixes: 57d155506dd5 ("eeprom: at24: extend driver to plug into the NVMEM framework")
Cc: Andrew Lunn <andrew@xxxxxxx>
Cc: Srinivas Kandagatla <srinivas.kandagatla@xxxxxxxxxx>
Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Cc: Bartosz Golaszewski <brgl@xxxxxxxx>
Cc: Arnd Bergmann <arnd@xxxxxxxx>
Signed-off-by: Bartosz Golaszewski <bgolaszewski@xxxxxxxxxxxx>
diff --git a/drivers/misc/eeprom/at24.c b/drivers/misc/eeprom/at24.c
index 35bf2477693d..518945b2f737 100644
--- a/drivers/misc/eeprom/at24.c
+++ b/drivers/misc/eeprom/at24.c
@@ -685,7 +685,7 @@ static int at24_probe(struct i2c_client *client)
nvmem_config.name = dev_name(dev);
nvmem_config.dev = dev;
nvmem_config.read_only = !writable;
- nvmem_config.root_only = true;
+ nvmem_config.root_only = !(flags & AT24_FLAG_IRUGO);
nvmem_config.owner = THIS_MODULE;
nvmem_config.compat = true;
nvmem_config.base_dev = dev;
