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ocxl: Constify 'struct bin_attribute'

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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>
This commit is contained in:
Thomas Weißschuh 2024-12-21 15:48:07 +01:00 committed by Greg Kroah-Hartman
parent 95bc2d4a90
commit 0e3cd21cde
1 changed files with 2 additions and 2 deletions
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4
drivers/misc/ocxl/sysfs.c
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@ -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) {