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w1: ds2781: Constify 'struct bin_attribute'

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The sysfs core now allows instances of 'struct bin_attribute' to be
moved into read-only memory. Make use of that to protect them against
accidental or malicious modifications.

Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Link: https://lore.kernel.org/r/20241211-sysfs-const-bin_attr-w1-v1-10-c4befd2aa7cc@weissschuh.net
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
This commit is contained in:
Thomas Weißschuh
2024-12-11 18:50:25 +01:00
committed by Krzysztof Kozlowski
parent 4a68c8530f
commit c797bbdac5
1 changed files with 4 additions and 4 deletions
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8
drivers/w1/slaves/w1_ds2781.c
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@@ -84,7 +84,7 @@ int w1_ds2781_eeprom_cmd(struct device *dev, int addr, int cmd)
EXPORT_SYMBOL(w1_ds2781_eeprom_cmd);
static ssize_t w1_slave_read(struct file *filp, struct kobject *kobj,
struct bin_attribute *bin_attr, char *buf,
const struct bin_attribute *bin_attr, char *buf,
loff_t off, size_t count)
{
struct device *dev = kobj_to_dev(kobj);
@@ -92,15 +92,15 @@ static ssize_t w1_slave_read(struct file *filp, struct kobject *kobj,
return w1_ds2781_io(dev, buf, off, count, 0);
}
static BIN_ATTR_RO(w1_slave, DS2781_DATA_SIZE);
static const BIN_ATTR_RO(w1_slave, DS2781_DATA_SIZE);
static struct bin_attribute *w1_ds2781_bin_attrs[] = {
static const struct bin_attribute *const w1_ds2781_bin_attrs[] = {
&bin_attr_w1_slave,
NULL,
};
static const struct attribute_group w1_ds2781_group = {
.bin_attrs = w1_ds2781_bin_attrs,
.bin_attrs_new = w1_ds2781_bin_attrs,
};
static const struct attribute_group *w1_ds2781_groups[] = {