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nvmem: core: cleanup old eeprom compat entry attributes

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file permission are derived based on various configs for
default nvmem sysfs file, reuse it to create the eeprom
compat file too.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Link: https://lore.kernel.org/r/20200417121306.23121-1-srinivas.kandagatla@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Srinivas Kandagatla 2020-04-17 13:13:06 +01:00 committed by Greg Kroah-Hartman
parent 3871fdfd19
commit 2a4542e55f
1 changed files with 14 additions and 38 deletions
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52
drivers/nvmem/core.c
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@ -167,11 +167,8 @@ static ssize_t bin_attr_nvmem_write(struct file *filp, struct kobject *kobj,
return count;
}
static umode_t nvmem_bin_attr_is_visible(struct kobject *kobj,
struct bin_attribute *attr, int i)
static umode_t nvmem_bin_attr_get_umode(struct nvmem_device *nvmem)
{
struct device *dev = container_of(kobj, struct device, kobj);
struct nvmem_device *nvmem = to_nvmem_device(dev);
umode_t mode = 0400;
if (!nvmem->root_only)
@ -189,6 +186,15 @@ static umode_t nvmem_bin_attr_is_visible(struct kobject *kobj,
return mode;
}
static umode_t nvmem_bin_attr_is_visible(struct kobject *kobj,
struct bin_attribute *attr, int i)
{
struct device *dev = container_of(kobj, struct device, kobj);
struct nvmem_device *nvmem = to_nvmem_device(dev);
return nvmem_bin_attr_get_umode(nvmem);
}
/* default read/write permissions */
static struct bin_attribute bin_attr_rw_nvmem = {
.attr = {
@ -215,34 +221,14 @@ static const struct attribute_group *nvmem_dev_groups[] = {
NULL,
};
/* read only permission */
static struct bin_attribute bin_attr_ro_nvmem = {
static struct bin_attribute bin_attr_nvmem_eeprom_compat = {
.attr = {
.name = "nvmem",
.mode = 0444,
},
.read = bin_attr_nvmem_read,
};
/* default read/write permissions, root only */
static struct bin_attribute bin_attr_rw_root_nvmem = {
.attr = {
.name = "nvmem",
.mode = 0600,
.name = "eeprom",
},
.read = bin_attr_nvmem_read,
.write = bin_attr_nvmem_write,
};
/* read only permission, root only */
static struct bin_attribute bin_attr_ro_root_nvmem = {
.attr = {
.name = "nvmem",
.mode = 0400,
},
.read = bin_attr_nvmem_read,
};
/*
* nvmem_setup_compat() - Create an additional binary entry in
* drivers sys directory, to be backwards compatible with the older
@ -259,18 +245,8 @@ static int nvmem_sysfs_setup_compat(struct nvmem_device *nvmem,
if (!config->base_dev)
return -EINVAL;
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 = bin_attr_nvmem_eeprom_compat;
nvmem->eeprom.attr.mode = nvmem_bin_attr_get_umode(nvmem);
nvmem->eeprom.size = nvmem->size;
#ifdef CONFIG_DEBUG_LOCK_ALLOC
nvmem->eeprom.attr.key = &eeprom_lock_key;