UBI: improve error messages
Always print error code with error messages, sometimes it is
extremely helpful info.
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
diff --git a/drivers/mtd/ubi/build.c b/drivers/mtd/ubi/build.c
index b0791f7..5490a73 100644
--- a/drivers/mtd/ubi/build.c
+++ b/drivers/mtd/ubi/build.c
@@ -211,7 +211,8 @@
out_unregister:
device_unregister(&ubi->dev);
out:
- ubi_err("failed to initialize sysfs for %s", ubi->ubi_name);
+ ubi_err("failed to initialize sysfs for %s, error %d",
+ ubi->ubi_name, err);
return err;
}
@@ -285,7 +286,7 @@
err = cdev_add(&ubi->cdev, dev, 1);
if (err) {
- ubi_err("cannot add character device %s", ubi->ubi_name);
+ ubi_err("cannot add character device");
goto out_unreg;
}
@@ -296,8 +297,10 @@
for (i = 0; i < ubi->vtbl_slots; i++)
if (ubi->volumes[i]) {
err = ubi_add_volume(ubi, i);
- if (err)
+ if (err) {
+ ubi_err("cannot add volume %d", i);
goto out_volumes;
+ }
}
return 0;
@@ -309,6 +312,7 @@
cdev_del(&ubi->cdev);
out_unreg:
unregister_chrdev_region(ubi->cdev.dev, ubi->vtbl_slots + 1);
+ ubi_err("cannot initialize UBI %s, error %d", ubi->ubi_name, err);
return err;
}
@@ -422,7 +426,8 @@
/* Make sure minimal I/O unit is power of 2 */
if (!is_power_of_2(ubi->min_io_size)) {
- ubi_err("bad min. I/O unit");
+ ubi_err("min. I/O unit (%d) is not power of 2",
+ ubi->min_io_size);
return -EINVAL;
}