diff options
| -rw-r--r-- | drivers/target/target_core_transport.c | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/drivers/target/target_core_transport.c b/drivers/target/target_core_transport.c index 42c2a44b83dd..6094a6beddde 100644 --- a/drivers/target/target_core_transport.c +++ b/drivers/target/target_core_transport.c @@ -754,7 +754,15 @@ 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 (scsi_status != SAM_STAT_GOOD) { + return; + } + + /* + * Calculate new residual count based upon length of SCSI data + * transferred. + */ + if (length < cmd->data_length) { if (cmd->se_cmd_flags & SCF_UNDERFLOW_BIT) { cmd->residual_count += cmd->data_length - length; } else { @@ -763,6 +771,12 @@ void target_complete_cmd_with_length(struct se_cmd *cmd, u8 scsi_status, int len } cmd->data_length = length; + } else if (length > cmd->data_length) { + cmd->se_cmd_flags |= SCF_OVERFLOW_BIT; + cmd->residual_count = length - cmd->data_length; + } else { + cmd->se_cmd_flags &= ~(SCF_OVERFLOW_BIT | SCF_UNDERFLOW_BIT); + cmd->residual_count = 0; } target_complete_cmd(cmd, scsi_status); |