From 49df9fc9b9fd41e5749c5a9be2d2076328f75fc7 Mon Sep 17 00:00:00 2001 From: Nicholas Bellinger Date: Tue, 29 Jan 2013 13:33:05 -0800 Subject: [PATCH] target: Fix zero-length INQUIRY additional sense code regression This patch fixes a minor regression introduced in v3.8-rc1 code where a zero-length INQUIRY was no longer returning the correct INVALID FIELD IN CDB additional sense code. This regression was introduced with the following commit: commit de103c93aff0bed0ae984274e5dc8b95899badab Author: Christoph Hellwig Date: Tue Nov 6 12:24:09 2012 -0800 target: pass sense_reason as a return value and this patch has been tested with the following zero-length CDB: sg_raw /dev/sdd 12 00 83 00 00 00 SCSI Status: Check Condition Sense Information: Fixed format, current; Sense key: Illegal Request Additional sense: Invalid field in cdb Cc: Christoph Hellwig Cc: Paolo Bonzini Cc: Roland Dreier Signed-off-by: Nicholas Bellinger --- drivers/target/target_core_spc.c | 9 ++++----- 1 file changed, 4 insertions(+), 5 deletions(-) diff --git a/drivers/target/target_core_spc.c b/drivers/target/target_core_spc.c index 84f9e96e8ace..f8857d4eac66 100644 --- a/drivers/target/target_core_spc.c +++ b/drivers/target/target_core_spc.c @@ -641,11 +641,10 @@ spc_emulate_inquiry(struct se_cmd *cmd) out: rbuf = transport_kmap_data_sg(cmd); - if (!rbuf) - return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE; - - memcpy(rbuf, buf, min_t(u32, sizeof(buf), cmd->data_length)); - transport_kunmap_data_sg(cmd); + if (rbuf) { + memcpy(rbuf, buf, min_t(u32, sizeof(buf), cmd->data_length)); + transport_kunmap_data_sg(cmd); + } if (!ret) target_complete_cmd(cmd, GOOD); -- 2.34.1