Upgrade to 4.4.50-rt62

[kvmfornfv.git] / kernel / drivers / target / target_core_sbc.c

diff --git a/kernel/drivers/target/target_core_sbc.c b/kernel/drivers/target/target_core_sbc.c
index 98698d8..2e27b10 100644 (file)
--- a/kernel/drivers/target/target_core_sbc.c
+++ b/kernel/drivers/target/target_core_sbc.c
@@ -442,6 +442,7 @@ static sense_reason_t compare_and_write_post(struct se_cmd *cmd, bool success,
                                             int *post_ret)
 {
        struct se_device *dev = cmd->se_dev;
+       sense_reason_t ret = TCM_NO_SENSE;
 
        /*
         * Only set SCF_COMPARE_AND_WRITE_POST to force a response fall-through
@@ -449,9 +450,12 @@ static sense_reason_t compare_and_write_post(struct se_cmd *cmd, bool success,
         * sent to the backend driver.
         */
        spin_lock_irq(&cmd->t_state_lock);
-       if ((cmd->transport_state & CMD_T_SENT) && !cmd->scsi_status) {
+       if (cmd->transport_state & CMD_T_SENT) {
                cmd->se_cmd_flags |= SCF_COMPARE_AND_WRITE_POST;
                *post_ret = 1;
+
+               if (cmd->scsi_status == SAM_STAT_CHECK_CONDITION)
+                       ret = TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
        }
        spin_unlock_irq(&cmd->t_state_lock);
 
@@ -461,7 +465,7 @@ static sense_reason_t compare_and_write_post(struct se_cmd *cmd, bool success,
         */
        up(&dev->caw_sem);
 
-       return TCM_NO_SENSE;
+       return ret;
 }
 
 static sense_reason_t compare_and_write_callback(struct se_cmd *cmd, bool success,
@@ -594,7 +598,7 @@ static sense_reason_t compare_and_write_callback(struct se_cmd *cmd, bool succes
        cmd->transport_state |= CMD_T_ACTIVE|CMD_T_BUSY|CMD_T_SENT;
        spin_unlock_irq(&cmd->t_state_lock);
 
-       __target_execute_cmd(cmd);
+       __target_execute_cmd(cmd, false);
 
        kfree(buf);
        return ret;