[PATCH] iio: imu: bno055: constify 'struct bin_attribute'

[PATCH] iio: imu: bno055: constify 'struct bin_attribute'

[Thomas Weißschuh]

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>
---
 drivers/iio/imu/bno055/bno055.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/iio/imu/bno055/bno055.c b/drivers/iio/imu/bno055/bno055.c
index 0728d38260a1c9dd218569ee870bd62c833e9906..59814de042c7d6d69547eb2adc9e1174a7e0c324 100644
--- 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 = {

---
base-commit: 2d8308bf5b67dff50262d8a9260a50113b3628c6
change-id: 20241215-sysfs-const-bin_attr-iio-66be522330f3

Best regards,
-- 
Thomas Weißschuh <linux@weissschuh.net>

Re: [PATCH] iio: imu: bno055: constify 'struct bin_attribute'

[Jonathan Cameron]

On Sun, 15 Dec 2024 16:21:24 +0100
Thomas Weißschuh <linux@weissschuh.net> wrote:

> 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>
Hi Thomas

Applied to the togreg branch of iio.git, but I'll push out briefly as testing
to let 0-day take a quick look at this and the other stuff I've queued up today.

Thanks,

Jonathan

> ---
>  drivers/iio/imu/bno055/bno055.c | 8 ++++----
>  1 file changed, 4 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/iio/imu/bno055/bno055.c b/drivers/iio/imu/bno055/bno055.c
> index 0728d38260a1c9dd218569ee870bd62c833e9906..59814de042c7d6d69547eb2adc9e1174a7e0c324 100644
> --- 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 = {
> 
> ---
> base-commit: 2d8308bf5b67dff50262d8a9260a50113b3628c6
> change-id: 20241215-sysfs-const-bin_attr-iio-66be522330f3
> 
> Best regards,