ocxl: Constify 'struct bin_attribute'

JIRA: https://issues.redhat.com/browse/RHEL-116876

commit 0e3cd21
Author: Thomas Weißschuh <linux@weissschuh.net>
Date:   Sat Dec 21 15:48:07 2024 +0100

    ocxl: 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>
    Acked-by: Andrew Donnellan <ajd@linux.ibm.com>
    Link: https://lore.kernel.org/r/20241221-sysfs-const-bin_attr-misc-drivers-v2-1-ba5e79fe8771@weissschuh.net
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Signed-off-by: Anusha Srivatsa <asrivats@redhat.com>

Author: anushasrivats

drivers/misc/ocxl/sysfs.c

@@ -94,7 +94,7 @@ static struct device_attribute afu_attrs[] = {
 };
 
 static ssize_t global_mmio_read(struct file *filp, struct kobject *kobj,
-				struct bin_attribute *bin_attr, char *buf,
+				const struct bin_attribute *bin_attr, char *buf,
 				loff_t off, size_t count)
 {
 	struct ocxl_afu *afu = to_afu(kobj_to_dev(kobj));
@@ -155,7 +155,7 @@ int ocxl_sysfs_register_afu(struct ocxl_file_info *info)
 	info->attr_global_mmio.attr.name = "global_mmio_area";
 	info->attr_global_mmio.attr.mode = 0600;
 	info->attr_global_mmio.size = info->afu->config.global_mmio_size;
-	info->attr_global_mmio.read = global_mmio_read;
+	info->attr_global_mmio.read_new = global_mmio_read;
 	info->attr_global_mmio.mmap = global_mmio_mmap;
 	rc = device_create_bin_file(&info->dev, &info->attr_global_mmio);
 	if (rc) {