All user-space tools are currently testing the /sys/class/ubi/version value
to make sure they can interact with the in-kernel layer.
They actually don't care about the on-flash format version since this field
is attached to the UBI subsystem and not to each UBI device instance
(theoretically, each instance could have it's own on-flash format version).
All they care about is whether they are able to use the ioctl they know
about.
Create a new UBI_ABI_VERSION to expose the the ABI version instead of
using the UBI_VERSION value which is about to be increased to support
MLC devices.
Signed-off-by: Boris Brezillon <boris.brezil...@free-electrons.com>
---
drivers/mtd/ubi/build.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/mtd/ubi/build.c b/drivers/mtd/ubi/build.c
index 45ea1ddebc5c..914fcf07b573 100644
--- a/drivers/mtd/ubi/build.c
+++ b/drivers/mtd/ubi/build.c
@@ -103,11 +103,13 @@ DEFINE_MUTEX(ubi_devices_mutex);
/* Protects @ubi_devices and @ubi->ref_count */
static DEFINE_SPINLOCK(ubi_devices_lock);
+#define UBI_ABI_VERSION 1
+
/* "Show" method for files in '/<sysfs>/class/ubi/' */
static ssize_t ubi_version_show(struct class *class,
struct class_attribute *attr, char *buf)
{
- return sprintf(buf, "%d\n", UBI_VERSION);
+ return sprintf(buf, "%d\n", UBI_ABI_VERSION);
}
/* UBI version attribute ('/<sysfs>/class/ubi/version') */
@@ -1490,7 +1492,7 @@ MODULE_PARM_DESC(fm_autoconvert, "Set this parameter to
enable fastmap automatic
module_param(fm_debug, bool, 0);
MODULE_PARM_DESC(fm_debug, "Set this parameter to enable fastmap debugging by
default. Warning, this will make fastmap slow!");
#endif
-MODULE_VERSION(__stringify(UBI_VERSION));
+MODULE_VERSION(__stringify(UBI_ABI_VERSION));
MODULE_DESCRIPTION("UBI - Unsorted Block Images");
MODULE_AUTHOR("Artem Bityutskiy");
MODULE_LICENSE("GPL");
--
2.7.4
