lightnvm: do not load L2P table if not supported

An Open-Channel SSD can work on two modes: (i) hybrid mode, where the
L2P table is maintained both by the host and by the device; and (ii)
full host-based, where the L2P table is uniquely maintained by the host.

In the advent of a new target implementing the full host-based mode, do
not assume that the L2P table must be loaded on the generic media
manager; check device properties loaded on the identify command instead.

Signed-off-by: Javier González <javier@cnexlabs.com>
Moved into the following statement.
Signed-off-by: Matias Bjørling <m@bjorling.me>
Signed-off-by: Jens Axboe <axboe@fb.com>

diff --git a/drivers/lightnvm/gennvm.c b/drivers/lightnvm/gennvm.c
index 42c1c2ab6cc3531fa45355abc1e25123fdd578b1..72e124a3927d4e5f697f7b1607d339dab7d3e663 100644 (file)
--- a/drivers/lightnvm/gennvm.c
+++ b/drivers/lightnvm/gennvm.c
@@ -257,7 +257,7 @@ static int gennvm_blocks_init(struct nvm_dev *dev, struct gen_nvm *gn)
                }
        }
 
-       if (dev->ops->get_l2p_tbl) {
+       if ((dev->identity.dom & NVM_RSP_L2P) && dev->ops->get_l2p_tbl) {
                ret = dev->ops->get_l2p_tbl(dev, 0, dev->total_secs,
                                                        gennvm_block_map, dev);
                if (ret) {