Driver core: Constify struct sysfs_ops in struct kobj_type
Constify struct sysfs_ops.
This is part of the ops structure constification
effort started by Arjan van de Ven et al.
Benefits of this constification:
* prevents modification of data that is shared
(referenced) by many other structure instances
at runtime
* detects/prevents accidental (but not intentional)
modification attempts on archs that enforce
read-only kernel data at runtime
* potentially better optimized code as the compiler
can assume that the const data cannot be changed
* the compiler/linker move const data into .rodata
and therefore exclude them from false sharing
Signed-off-by: Emese Revfy <[email protected]>
Acked-by: David Teigland <[email protected]>
Acked-by: Matt Domsch <[email protected]>
Acked-by: Maciej Sosnowski <[email protected]>
Acked-by: Hans J. Koch <[email protected]>
Acked-by: Pekka Enberg <[email protected]>
Acked-by: Jens Axboe <[email protected]>
Acked-by: Stephen Hemminger <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
diff --git a/drivers/firmware/memmap.c b/drivers/firmware/memmap.c
index 20f6457..d59f7ca 100644
--- a/drivers/firmware/memmap.c
+++ b/drivers/firmware/memmap.c
@@ -74,7 +74,7 @@
NULL
};
-static struct sysfs_ops memmap_attr_ops = {
+static const struct sysfs_ops memmap_attr_ops = {
.show = memmap_attr_show,
};
