From: Sagi Grimberg <sagi@grimberg.me>
Date: Fri, 2 Nov 2018 10:28:14 -0700
Subject: [PATCH] nvme: cache controller attributes
Git-commit: 3e53ba38a9404434a8b57683825279f4305b5a76
Patch-mainline: v5.0-rc1
References: bsc#1104967,FATE#325924
We get the controller attributes in identify, cache them as we'll need
them for traffic based keep alive support.
Reviewed-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Acked-by: Hannes Reinecke <hare@suse.com>
---
drivers/nvme/host/core.c | 1 +
drivers/nvme/host/nvme.h | 1 +
2 files changed, 2 insertions(+)
diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c
index e57c673ae737..9de6244a345c 100644
--- a/drivers/nvme/host/core.c
+++ b/drivers/nvme/host/core.c
@@ -2409,6 +2409,7 @@ int nvme_init_identify(struct nvme_ctrl *ctrl)
ctrl->sgls = le32_to_cpu(id->sgls);
ctrl->kas = le16_to_cpu(id->kas);
ctrl->max_namespaces = le32_to_cpu(id->mnan);
+ ctrl->ctratt = le32_to_cpu(id->ctratt);
if (id->rtd3e) {
/* us -> s */
diff --git a/drivers/nvme/host/nvme.h b/drivers/nvme/host/nvme.h
index f1e4566e6ca8..4be7bbcfe66d 100644
--- a/drivers/nvme/host/nvme.h
+++ b/drivers/nvme/host/nvme.h
@@ -194,6 +194,7 @@ struct nvme_ctrl {
u8 apsta;
u32 oaes;
u32 aen_result;
+ u32 ctratt;
unsigned int shutdown_timeout;
unsigned int kato;
bool subsystem;
--
2.16.4