iio: imu: bno055: constify 'struct bin_attribute'

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://patch.msgid.link/20241215-sysfs-const-bin_attr-iio-v1-1-a5801212482e@weissschuh.net
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

diff --git a/drivers/iio/imu/bno055/bno055.c b/drivers/iio/imu/bno055/bno055.c
index 0728d38260a1c9dd218569ee870bd62c833e9906..59814de042c7d6d69547eb2adc9e1174a7e0c324 100644 (file)
--- a/drivers/iio/imu/bno055/bno055.c
+++ b/drivers/iio/imu/bno055/bno055.c
@@ -1193,7 +1193,7 @@ static ssize_t serialnumber_show(struct device *dev,
 }
 
 static ssize_t calibration_data_read(struct file *filp, struct kobject *kobj,
-                                    struct bin_attribute *bin_attr, char *buf,
+                                    const struct bin_attribute *bin_attr, char *buf,
                                     loff_t pos, size_t count)
 {
        struct bno055_priv *priv = iio_priv(dev_to_iio_dev(kobj_to_dev(kobj)));
@@ -1348,16 +1348,16 @@ static struct attribute *bno055_attrs[] = {
        NULL
 };
 
-static BIN_ATTR_RO(calibration_data, BNO055_CALDATA_LEN);
+static const BIN_ATTR_RO(calibration_data, BNO055_CALDATA_LEN);
 
-static struct bin_attribute *bno055_bin_attrs[] = {
+static const struct bin_attribute *const bno055_bin_attrs[] = {
        &bin_attr_calibration_data,
        NULL
 };
 
 static const struct attribute_group bno055_attrs_group = {
        .attrs = bno055_attrs,
-       .bin_attrs = bno055_bin_attrs,
+       .bin_attrs_new = bno055_bin_attrs,
 };
 
 static const struct iio_info bno055_info = {