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drm/sysfs: 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>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Andi Shyti <andi.shyti@linux.intel.com>
Link: https://lore.kernel.org/r/20241216-sysfs-const-bin_attr-drm-v1-1-210f2b36b9bf@weissschuh.net
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Thomas Weißschuh
2024-12-16 12:34:47 +01:00
committed by Greg Kroah-Hartman
parent 1c83b02c91
commit 7787bfb3b0
1 changed files with 5 additions and 5 deletions
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10
drivers/gpu/drm/drm_sysfs.c
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@@ -261,7 +261,7 @@ static ssize_t enabled_show(struct device *device,
}
static ssize_t edid_show(struct file *filp, struct kobject *kobj,
struct bin_attribute *attr, char *buf, loff_t off,
const struct bin_attribute *attr, char *buf, loff_t off,
size_t count)
{
struct device *connector_dev = kobj_to_dev(kobj);
@@ -315,21 +315,21 @@ static struct attribute *connector_dev_attrs[] = {
NULL
};
static struct bin_attribute edid_attr = {
static const struct bin_attribute edid_attr = {
.attr.name = "edid",
.attr.mode = 0444,
.size = 0,
.read = edid_show,
.read_new = edid_show,
};
static struct bin_attribute *connector_bin_attrs[] = {
static const struct bin_attribute *const connector_bin_attrs[] = {
&edid_attr,
NULL
};
static const struct attribute_group connector_dev_group = {
.attrs = connector_dev_attrs,
.bin_attrs = connector_bin_attrs,
.bin_attrs_new = connector_bin_attrs,
};
static const struct attribute_group *connector_dev_groups[] = {