UBI: add ioctl for map operation

This patch adds ioctl for the LEB map operation (as a debugging
option so far).

[Re-named ioctl to make it look the same as the other one and made
 some minor stylistic changes. Artem Bityutskiy.]

Signed-off-by: Corentin Chary <corentincj@iksaif.net>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>

1 files changed, 14 insertions, 0 deletions

diff --git a/drivers/mtd/ubi/cdev.c b/drivers/mtd/ubi/cdev.c
index 98cf31ed0814..055e3f563c13 100644
--- a/drivers/mtd/ubi/cdev.c
+++ b/drivers/mtd/ubi/cdev.c
@@ -518,6 +518,20 @@ static int vol_cdev_ioctl(struct inode *inode, struct file *file,
                 err = ubi_wl_flush(ubi);
                 break;
         }
+
+        /* Logical eraseblock map command */
+        case UBI_IOCEBMAP:
+        {
+                struct ubi_map_req req;
+
+                err = copy_from_user(&req, argp, sizeof(struct ubi_map_req));
+                if (err) {
+                        err = -EFAULT;
+                        break;
+                }
+                err = ubi_leb_map(desc, req.lnum, req.dtype);
+                break;
+        }
 #endif
 
         default: