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| author | Chaotian Jing <chaotian.jing@mediatek.com> | 2024-08-13 13:34:10 +0800 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2024-08-16 21:02:06 -0400 |
| commit | f03e94f23b04c2b71c0044c1534921b3975ef10c (patch) | |
| tree | c61e7fa56be6def923cb6efdcab955f08b59a94f /include/scsi | |
| parent | 2fa62ce91a52e704716d08f9a8eb3f9e7e04710d (diff) | |
| download | linux-f03e94f23b04c2b71c0044c1534921b3975ef10c.tar.gz linux-f03e94f23b04c2b71c0044c1534921b3975ef10c.tar.bz2 linux-f03e94f23b04c2b71c0044c1534921b3975ef10c.zip | |
scsi: core: Fix the return value of scsi_logical_block_count()
scsi_logical_block_count() should return the block count of a given SCSI
command. The original implementation ended up shifting twice, leading to an
incorrect count being returned. Fix the conversion between bytes and
logical blocks.
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>
Link: https://lore.kernel.org/r/20240813053534.7720-1-chaotian.jing@mediatek.com
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'include/scsi')
| -rw-r--r-- | include/scsi/scsi_cmnd.h | 2 |
1 files changed, 1 insertions, 1 deletions
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; } |