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-rw-r--r--drivers/target/target_core_sbc.c4
-rw-r--r--drivers/target/target_core_spc.c9
-rw-r--r--drivers/target/target_core_transport.c17
3 files changed, 25 insertions, 5 deletions
diff --git a/drivers/target/target_core_sbc.c b/drivers/target/target_core_sbc.c
index 97a33603795d..1d3a626bf24f 100644
--- a/drivers/target/target_core_sbc.c
+++ b/drivers/target/target_core_sbc.c
@@ -81,7 +81,7 @@ sbc_emulate_readcapacity(struct se_cmd *cmd)
transport_kunmap_data_sg(cmd);
}
- target_complete_cmd(cmd, GOOD);
+ target_complete_cmd_with_length(cmd, GOOD, 8);
return 0;
}
@@ -137,7 +137,7 @@ sbc_emulate_readcapacity_16(struct se_cmd *cmd)
transport_kunmap_data_sg(cmd);
}
- target_complete_cmd(cmd, GOOD);
+ target_complete_cmd_with_length(cmd, GOOD, 32);
return 0;
}
diff --git a/drivers/target/target_core_spc.c b/drivers/target/target_core_spc.c
index 17b5b7e099fa..6cd7222738fc 100644
--- a/drivers/target/target_core_spc.c
+++ b/drivers/target/target_core_spc.c
@@ -716,6 +716,7 @@ spc_emulate_inquiry(struct se_cmd *cmd)
unsigned char *buf;
sense_reason_t ret;
int p;
+ int len = 0;
buf = kzalloc(SE_INQUIRY_BUF, GFP_KERNEL);
if (!buf) {
@@ -737,6 +738,7 @@ spc_emulate_inquiry(struct se_cmd *cmd)
}
ret = spc_emulate_inquiry_std(cmd, buf);
+ len = buf[4] + 5;
goto out;
}
@@ -744,6 +746,7 @@ spc_emulate_inquiry(struct se_cmd *cmd)
if (cdb[2] == evpd_handlers[p].page) {
buf[1] = cdb[2];
ret = evpd_handlers[p].emulate(cmd, buf);
+ len = get_unaligned_be16(&buf[2]) + 4;
goto out;
}
}
@@ -760,7 +763,7 @@ out:
kfree(buf);
if (!ret)
- target_complete_cmd(cmd, GOOD);
+ target_complete_cmd_with_length(cmd, GOOD, len);
return ret;
}
@@ -1098,7 +1101,7 @@ set_length:
transport_kunmap_data_sg(cmd);
}
- target_complete_cmd(cmd, GOOD);
+ target_complete_cmd_with_length(cmd, GOOD, length);
return 0;
}
@@ -1274,7 +1277,7 @@ done:
buf[3] = (lun_count & 0xff);
transport_kunmap_data_sg(cmd);
- target_complete_cmd(cmd, GOOD);
+ target_complete_cmd_with_length(cmd, GOOD, 8 + lun_count * 8);
return 0;
}
EXPORT_SYMBOL(spc_emulate_report_luns);
diff --git a/drivers/target/target_core_transport.c b/drivers/target/target_core_transport.c
index 15dbf6e97289..c9e8b35a954f 100644
--- a/drivers/target/target_core_transport.c
+++ b/drivers/target/target_core_transport.c
@@ -703,6 +703,23 @@ void target_complete_cmd(struct se_cmd *cmd, u8 scsi_status)
}
EXPORT_SYMBOL(target_complete_cmd);
+void target_complete_cmd_with_length(struct se_cmd *cmd, u8 scsi_status, int length)
+{
+ if (scsi_status == SAM_STAT_GOOD && length < cmd->data_length) {
+ if (cmd->se_cmd_flags & SCF_UNDERFLOW_BIT) {
+ cmd->residual_count += cmd->data_length - length;
+ } else {
+ cmd->se_cmd_flags |= SCF_UNDERFLOW_BIT;
+ cmd->residual_count = cmd->data_length - length;
+ }
+
+ cmd->data_length = length;
+ }
+
+ target_complete_cmd(cmd, scsi_status);
+}
+EXPORT_SYMBOL(target_complete_cmd_with_length);
+
static void target_add_to_state_list(struct se_cmd *cmd)
{
struct se_device *dev = cmd->se_dev;