[v2,07/10] sysfs: treewide: constify attribute callback of bin_attribute::llseek()

Commit Message

Thomas Weißschuh Nov. 3, 2024, 5:03 p.m. UTC

The llseek() callbacks should not modify the struct
bin_attribute passed as argument.
Enforce this by marking the argument as const.

As there are not many callback implementers perform this change
throughout the tree at once.

Signed-off-by: Thomas Weißschuh <[e-mail]>
---
 drivers/pci/pci-sysfs.c | 2 +-
 include/linux/sysfs.h   | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

Patch

diff --git a/drivers/pci/pci-sysfs.c b/drivers/pci/pci-sysfs.c
index 0ad3427228b12aa95325c6fc00e9686740559238..49bee70f7d375bca056476acd6528d19ead2c419 100644
--- a/drivers/pci/pci-sysfs.c
+++ b/drivers/pci/pci-sysfs.c
@@ -841,7 +841,7 @@  static const struct attribute_group pci_dev_config_attr_group = {
 static __maybe_unused loff_t
 pci_llseek_resource(struct file *filep,
 		    struct kobject *kobj __always_unused,
-		    struct bin_attribute *attr,
+		    const struct bin_attribute *attr,
 		    loff_t offset, int whence)
 {
 	return fixed_size_llseek(filep, offset, whence, attr->size);
diff --git a/include/linux/sysfs.h b/include/linux/sysfs.h
index 9fcdc8cd3118f359742bfd8b708d5c3eff511042..cb2a5e277c2384f2e8add8fbf2907e8a819576ec 100644
--- a/include/linux/sysfs.h
+++ b/include/linux/sysfs.h
@@ -307,7 +307,7 @@  struct bin_attribute {
 			char *, loff_t, size_t);
 	ssize_t (*write)(struct file *, struct kobject *, struct bin_attribute *,
 			 char *, loff_t, size_t);
-	loff_t (*llseek)(struct file *, struct kobject *, struct bin_attribute *,
+	loff_t (*llseek)(struct file *, struct kobject *, const struct bin_attribute *,
 			 loff_t, int);
 	int (*mmap)(struct file *, struct kobject *, const struct bin_attribute *attr,
 		    struct vm_area_struct *vma);