[PATCH 5/5] lightnvm: do not load L2P table if not supported

From: Matias BjÃrling
Date: Thu Mar 03 2016 - 09:07:49 EST


From: Javier GonzÃlez <jg@xxxxxxxxxxx>

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 GonzÃlez <javier@xxxxxxxxxxxx>
Moved into the following statement.
Signed-off-by: Matias BjÃrling <m@xxxxxxxxxxx>
---
drivers/lightnvm/gennvm.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/lightnvm/gennvm.c b/drivers/lightnvm/gennvm.c
index 42c1c2a..72e124a 100644
--- 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) {
--
2.1.4