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authorMatthew Wilcox <matthew.r.wilcox@intel.com>2013-03-27 21:28:22 -0400
committerMatthew Wilcox <matthew.r.wilcox@intel.com>2013-04-16 15:05:22 -0400
commit063cc6d5591ea9c0631b81ac5c7b829d99738b2f (patch)
tree5a61528a0a76394666fdc42d6b51bf576a7c1002 /drivers/block/nvme-scsi.c
parentacb7aa0db09b8abd38abeb84334a8a27a52fbb1b (diff)
NVMe: Abstract out sector to block number conversion
Introduce nvme_block_nr() to help convert sectors to block numbers. This fixes an integer overflow in the SCSI conversion layer, and it's slightly less typing than opencoding it. Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com> Acked-by: Keith Busch <keith.busch@intel.com>
Diffstat (limited to 'drivers/block/nvme-scsi.c')
-rw-r--r--drivers/block/nvme-scsi.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/block/nvme-scsi.c b/drivers/block/nvme-scsi.c
index 483af3585c9..db7052ea8d0 100644
--- a/drivers/block/nvme-scsi.c
+++ b/drivers/block/nvme-scsi.c
@@ -2040,7 +2040,7 @@ static int nvme_trans_do_nvme_io(struct nvme_ns *ns, struct sg_io_hdr *hdr,
struct nvme_command c;
u8 opcode = (is_write ? nvme_cmd_write : nvme_cmd_read);
u16 control;
- u32 max_blocks = (dev->max_hw_sectors << 9) >> ns->lba_shift;
+ u32 max_blocks = nvme_block_nr(ns, dev->max_hw_sectors);
num_cmds = nvme_trans_io_get_num_cmds(hdr, cdb_info, max_blocks);