diff options
Diffstat (limited to 'drivers/target/target_core_sbc.c')
| -rw-r--r-- | drivers/target/target_core_sbc.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/target/target_core_sbc.c b/drivers/target/target_core_sbc.c index 856e800926b8..0d307c34f08e 100644 --- a/drivers/target/target_core_sbc.c +++ b/drivers/target/target_core_sbc.c @@ -293,6 +293,11 @@ sbc_setup_write_same(struct se_cmd *cmd, unsigned char *flags, struct sbc_ops *o if (!ops->execute_write_same_unmap) return TCM_UNSUPPORTED_SCSI_OPCODE; + if (!dev->dev_attrib.emulate_tpws) { + pr_err("Got WRITE_SAME w/ UNMAP=1, but backend device" + " has emulate_tpws disabled\n"); + return TCM_UNSUPPORTED_SCSI_OPCODE; + } cmd->execute_cmd = ops->execute_write_same_unmap; return 0; } |