[PATCH 04/26] nvme: honor namespace block size for I/O

[Ahmad Fatoum]

The translation inside nvme_block_nr() is a no-op for 512-byte sectors
as it expands to a right shift by (9 - 9) == 0.

For other sector sizes, it will mangle the block number, which is wrong:
block_device_ops already have blocks as units and NVMe registers the
block device with blockbits == ns->lba_shift, so the unit coming from the
block layer is already correct.

Assisted-by: Codex:gpt-5.5
Signed-off-by: Ahmad Fatoum <a.fatoum at barebox.org>
---
 drivers/nvme/host/core.c | 2 +-
 drivers/nvme/host/nvme.h | 5 -----
 2 files changed, 1 insertion(+), 6 deletions(-)

diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c
index 21aeda78ebfb..345707ecfeaf 100644
--- a/drivers/nvme/host/core.c
+++ b/drivers/nvme/host/core.c
@@ -293,7 +293,7 @@ static void nvme_setup_rw(struct nvme_ns *ns, struct nvme_command *cmnd,
 			  sector_t block, blkcnt_t num_block)
 {
 	cmnd->rw.nsid = cpu_to_le32(ns->head->ns_id);
-	cmnd->rw.slba = cpu_to_le64(nvme_block_nr(ns, block));
+	cmnd->rw.slba = cpu_to_le64(block);
 	cmnd->rw.length = cpu_to_le16(num_block - 1);
 	cmnd->rw.control = 0;
 	cmnd->rw.dsmgmt = 0;
diff --git a/drivers/nvme/host/nvme.h b/drivers/nvme/host/nvme.h
index 11942140ce32..cb259b5216f1 100644
--- a/drivers/nvme/host/nvme.h
+++ b/drivers/nvme/host/nvme.h
@@ -89,11 +89,6 @@ static inline bool nvme_ctrl_ready(struct nvme_ctrl *ctrl)
 	return val & NVME_CSTS_RDY;
 }
 
-static inline u64 nvme_block_nr(struct nvme_ns *ns, sector_t sector)
-{
-	return (sector >> (ns->lba_shift - 9));
-}
-
 static inline void nvme_end_request(struct nvme_request *rq, __le16 status,
 		union nvme_result result)
 {
-- 
2.47.3