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| author |   Parav Pandit <parav@mellanox.com> | 2017-01-26 17:17:28 +0200 |
|---|---|---|
| committer |   Jens Axboe <axboe@fb.com> | 2017-02-22 13:34:00 -0700 |
| commit | 986994a27587efd8ce4c595cab89b570f7475359 (patch) | |
| tree | d15adc87e0864d0a79c1a1cfc01bd16edc076710 /drivers/nvme | |
| parent | nvme: add semicolon in nvme_command setting (diff) | |
| download | linux-dev-986994a27587efd8ce4c595cab89b570f7475359.tar.xz linux-dev-986994a27587efd8ce4c595cab89b570f7475359.zip | |
nvme: Use CNS as 8-bit field and avoid endianness conversion
This patch defines CNS field as 8-bit field and avoids cpu_to/from_le
conversions.
Also initialize nvme_command cns value explicitly to NVME_ID_CNS_NS
for readability (don't rely on the fact that NVME_ID_CNS_NS = 0).
Reviewed-by: Max Gurtovoy <maxg@mellanox.com>
Signed-off-by: Parav Pandit <parav@mellanox.com>
Reviewed-by: Keith Busch <keith.busch@intel.com>
Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'drivers/nvme')
| -rw-r--r-- | drivers/nvme/host/core.c | 5 | ||||
| -rw-r--r-- | drivers/nvme/target/admin-cmd.c | 2 | ||||
| -rw-r--r-- | drivers/nvme/target/discovery.c | 4 |
3 files changed, 6 insertions, 5 deletions
diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c index a68bf6954ead..8b1be128b66e 100644 --- a/drivers/nvme/host/core.c +++ b/drivers/nvme/host/core.c @@ -560,7 +560,7 @@ int nvme_identify_ctrl(struct nvme_ctrl *dev, struct nvme_id_ctrl **id) /* gcc-4.4.4 (at least) has issues with initializers and anon unions */ c.identify.opcode = nvme_admin_identify; - c.identify.cns = cpu_to_le32(NVME_ID_CNS_CTRL); + c.identify.cns = NVME_ID_CNS_CTRL; *id = kmalloc(sizeof(struct nvme_id_ctrl), GFP_KERNEL); if (!*id) @@ -578,7 +578,7 @@ static int nvme_identify_ns_list(struct nvme_ctrl *dev, unsigned nsid, __le32 *n struct nvme_command c = { }; c.identify.opcode = nvme_admin_identify; - c.identify.cns = cpu_to_le32(NVME_ID_CNS_NS_ACTIVE_LIST); + c.identify.cns = NVME_ID_CNS_NS_ACTIVE_LIST; c.identify.nsid = cpu_to_le32(nsid); return nvme_submit_sync_cmd(dev->admin_q, &c, ns_list, 0x1000); } @@ -592,6 +592,7 @@ int nvme_identify_ns(struct nvme_ctrl *dev, unsigned nsid, /* gcc-4.4.4 (at least) has issues with initializers and anon unions */ c.identify.opcode = nvme_admin_identify; c.identify.nsid = cpu_to_le32(nsid); + c.identify.cns = NVME_ID_CNS_NS; *id = kmalloc(sizeof(struct nvme_id_ns), GFP_KERNEL); if (!*id) diff --git a/drivers/nvme/target/admin-cmd.c b/drivers/nvme/target/admin-cmd.c index 204e85efebab..94e524fea568 100644 --- a/drivers/nvme/target/admin-cmd.c +++ b/drivers/nvme/target/admin-cmd.c @@ -509,7 +509,7 @@ int nvmet_parse_admin_cmd(struct nvmet_req *req) break; case nvme_admin_identify: req->data_len = 4096; - switch (le32_to_cpu(cmd->identify.cns)) { + switch (cmd->identify.cns) { case NVME_ID_CNS_NS: req->execute = nvmet_execute_identify_ns; return 0; diff --git a/drivers/nvme/target/discovery.c b/drivers/nvme/target/discovery.c index 12f39eea569f..af8aabf05335 100644 --- a/drivers/nvme/target/discovery.c +++ b/drivers/nvme/target/discovery.c @@ -186,14 +186,14 @@ int nvmet_parse_discovery_cmd(struct nvmet_req *req) } case nvme_admin_identify: req->data_len = 4096; - switch (le32_to_cpu(cmd->identify.cns)) { + switch (cmd->identify.cns) { case NVME_ID_CNS_CTRL: req->execute = nvmet_execute_identify_disc_ctrl; return 0; default: pr_err("nvmet: unsupported identify cns %d\n", - le32_to_cpu(cmd->identify.cns)); + cmd->identify.cns); return NVME_SC_INVALID_OPCODE | NVME_SC_DNR; } default: |