UBI: improve debugging messages

Various minor improvements to the debugging messages which
I found useful while hunting problems.

Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>

1 files changed, 6 insertions, 3 deletions

diff --git a/drivers/mtd/ubi/kapi.c b/drivers/mtd/ubi/kapi.c
index 4abbe573fa40..2675207c5fe3 100644
--- a/drivers/mtd/ubi/kapi.c
+++ b/drivers/mtd/ubi/kapi.c
@@ -106,7 +106,7 @@ struct ubi_volume_desc *ubi_open_volume(int ubi_num, int vol_id, int mode)
         struct ubi_device *ubi;
         struct ubi_volume *vol;
 
-        dbg_gen("open device %d volume %d, mode %d", ubi_num, vol_id, mode);
+        dbg_gen("open device %d, volume %d, mode %d", ubi_num, vol_id, mode);
 
         if (ubi_num < 0 || ubi_num >= UBI_MAX_DEVICES)
                 return ERR_PTR(-EINVAL);
@@ -196,6 +196,8 @@ out_free:
         kfree(desc);
 out_put_ubi:
         ubi_put_device(ubi);
+        dbg_err("cannot open device %d, volume %d, error %d",
+                ubi_num, vol_id, err);
         return ERR_PTR(err);
 }
 EXPORT_SYMBOL_GPL(ubi_open_volume);
@@ -215,7 +217,7 @@ struct ubi_volume_desc *ubi_open_volume_nm(int ubi_num, const char *name,
         struct ubi_device *ubi;
         struct ubi_volume_desc *ret;
 
-        dbg_gen("open volume %s, mode %d", name, mode);
+        dbg_gen("open device %d, volume %s, mode %d", ubi_num, name, mode);
 
         if (!name)
                 return ERR_PTR(-EINVAL);
@@ -266,7 +268,8 @@ void ubi_close_volume(struct ubi_volume_desc *desc)
         struct ubi_volume *vol = desc->vol;
         struct ubi_device *ubi = vol->ubi;
 
-        dbg_gen("close volume %d, mode %d", vol->vol_id, desc->mode);
+        dbg_gen("close device %d, volume %d, mode %d",
+                ubi->ubi_num, vol->vol_id, desc->mode);
 
         spin_lock(&ubi->volumes_lock);
         switch (desc->mode) {