[PATCH 09/10] HID: roccat: lua: constify 'struct bin_attribute'

From: Thomas Weißschuh
Date: Mon Dec 02 2024 - 14:04:45 EST


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@xxxxxxxxxxxxxx>
---
drivers/hid/hid-roccat-lua.c | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/drivers/hid/hid-roccat-lua.c b/drivers/hid/hid-roccat-lua.c
index d5ddf0d68346b2c147f3c888badb77c06d77f46c..023ec64b4b0ea2f8168839ef6fd2c93c02846eab 100644
--- a/drivers/hid/hid-roccat-lua.c
+++ b/drivers/hid/hid-roccat-lua.c
@@ -66,7 +66,7 @@ static ssize_t lua_sysfs_write(struct file *fp, struct kobject *kobj,

#define LUA_SYSFS_W(thingy, THINGY) \
static ssize_t lua_sysfs_write_ ## thingy(struct file *fp, \
- struct kobject *kobj, struct bin_attribute *attr, \
+ struct kobject *kobj, const struct bin_attribute *attr, \
char *buf, loff_t off, size_t count) \
{ \
return lua_sysfs_write(fp, kobj, buf, off, count, \
@@ -75,7 +75,7 @@ static ssize_t lua_sysfs_write_ ## thingy(struct file *fp, \

#define LUA_SYSFS_R(thingy, THINGY) \
static ssize_t lua_sysfs_read_ ## thingy(struct file *fp, \
- struct kobject *kobj, struct bin_attribute *attr, \
+ struct kobject *kobj, const struct bin_attribute *attr, \
char *buf, loff_t off, size_t count) \
{ \
return lua_sysfs_read(fp, kobj, buf, off, count, \
@@ -85,11 +85,11 @@ static ssize_t lua_sysfs_read_ ## thingy(struct file *fp, \
#define LUA_BIN_ATTRIBUTE_RW(thingy, THINGY) \
LUA_SYSFS_W(thingy, THINGY) \
LUA_SYSFS_R(thingy, THINGY) \
-static struct bin_attribute lua_ ## thingy ## _attr = { \
+static const struct bin_attribute lua_ ## thingy ## _attr = { \
.attr = { .name = #thingy, .mode = 0660 }, \
.size = LUA_SIZE_ ## THINGY, \
- .read = lua_sysfs_read_ ## thingy, \
- .write = lua_sysfs_write_ ## thingy \
+ .read_new = lua_sysfs_read_ ## thingy, \
+ .write_new = lua_sysfs_write_ ## thingy \
};

LUA_BIN_ATTRIBUTE_RW(control, CONTROL)

--
2.47.1