scsi_logical_block_count() should return the block count of scsi device, but the original code has a wrong implement.

Cc: stable@vger.kernel.org Fixes: 6a20e21ae1e2 ("scsi: core: Add helper to return number of logical blocks in a request") Signed-off-by: Chaotian Jing chaotian.jing@mediatek.com Reviewed-by: Bart Van Assche bvanassche@acm.org --- include/scsi/scsi_cmnd.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/scsi/scsi_cmnd.h b/include/scsi/scsi_cmnd.h index 45c40d200154..8ecfb94049db 100644 --- a/include/scsi/scsi_cmnd.h +++ b/include/scsi/scsi_cmnd.h @@ -234,7 +234,7 @@ static inline sector_t scsi_get_lba(struct scsi_cmnd *scmd)

static inline unsigned int scsi_logical_block_count(struct scsi_cmnd *scmd) { - unsigned int shift = ilog2(scmd->device->sector_size) - SECTOR_SHIFT; + unsigned int shift = ilog2(scmd->device->sector_size);

return blk_rq_bytes(scsi_cmd_to_rq(scmd)) >> shift; }