sysfs: treewide: constify attribute callback of bin_attribute::llseek()

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 <linux@weissschuh.net>
Acked-by: Krzysztof Wilczyński <kw@linux.com>
Link: https://lore.kernel.org/r/20241103-sysfs-const-bin_attr-v2-7-71110628844c@weissschuh.net
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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);

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);