[PATCH v2 1/3] sysfs: constify bin_attribute argument of sysfs_bin_attr_simple_read()

Thomas Weißschuh
2024-12-28T08:43:47Z

Most users use this function through the BIN_ATTR_SIMPLE* macros,
they can handle the switch transparently.
Also adapt the two non-macro users in the same change.

Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
---
arch/powerpc/platforms/powernv/opal.c | 2 +-
fs/sysfs/file.c | 2 +-
include/linux/sysfs.h | 4 ++--
kernel/module/sysfs.c | 2 +-
4 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/arch/powerpc/platforms/powernv/opal.c b/arch/powerpc/platforms/powernv/opal.c
index 5d0f35bb917ebced8c741cd3af2c511949a1d2ef..013637e2b2a8e6a4ec6b93a520f8d5d9d3245467 100644
--- a/arch/powerpc/platforms/powernv/opal.c
+++ b/arch/powerpc/platforms/powernv/opal.c
@@ -818,7 +818,7 @@ static int opal_add_one_export(struct kobject *parent, const char *export_name,
sysfs_bin_attr_init(attr);
attr->attr.name = name;
attr->attr.mode = 0400;
- attr->read = sysfs_bin_attr_simple_read;
+ attr->read_new = sysfs_bin_attr_simple_read;
attr->private = __va(vals[0]);
attr->size = vals[1];

diff --git a/fs/sysfs/file.c b/fs/sysfs/file.c
index 785408861c01c89fc84c787848243a13c1338367..6931308876c4ac3b4c19878d5e1158ad8fe4f16f 100644
--- a/fs/sysfs/file.c
+++ b/fs/sysfs/file.c
@@ -817,7 +817,7 @@ EXPORT_SYMBOL_GPL(sysfs_emit_at);
* Returns number of bytes written to @buf.
*/
ssize_t sysfs_bin_attr_simple_read(struct file *file, struct kobject *kobj,
- struct bin_attribute *attr, char *buf,
+ const struct bin_attribute *attr, char *buf,
loff_t off, size_t count)
{
memcpy(buf, attr->private + off, count);
diff --git a/include/linux/sysfs.h b/include/linux/sysfs.h
index 0f2fcd244523f050c5286f19d4fe1846506f9214..2205561159afdb57d0a250bb0439b28c01d9010e 100644
--- a/include/linux/sysfs.h
+++ b/include/linux/sysfs.h
@@ -511,7 +511,7 @@ __printf(3, 4)
int sysfs_emit_at(char *buf, int at, const char *fmt, ...);

ssize_t sysfs_bin_attr_simple_read(struct file *file, struct kobject *kobj,
- struct bin_attribute *attr, char *buf,
+ const struct bin_attribute *attr, char *buf,
loff_t off, size_t count);

#else /* CONFIG_SYSFS */
@@ -774,7 +774,7 @@ static inline int sysfs_emit_at(char *buf, int at, const char *fmt, ...)

static inline ssize_t sysfs_bin_attr_simple_read(struct file *file,
struct kobject *kobj,
- struct bin_attribute *attr,
+ const struct bin_attribute *attr,
char *buf, loff_t off,
size_t count)
{
diff --git a/kernel/module/sysfs.c b/kernel/module/sysfs.c
index 456358e1fdc43e6b5b24f383bbefa37812971174..254017b58b645d4afcf6876d29bcc2e2113a8dc4 100644
--- a/kernel/module/sysfs.c
+++ b/kernel/module/sysfs.c
@@ -196,7 +196,7 @@ static int add_notes_attrs(struct module *mod, const struct load_info *info)
nattr->attr.mode = 0444;
nattr->size = info->sechdrs[i].sh_size;
nattr->private = (void *)info->sechdrs[i].sh_addr;
- nattr->read = sysfs_bin_attr_simple_read;
+ nattr->read_new = sysfs_bin_attr_simple_read;
++nattr;
}
++loaded;

--
2.47.1