ipmi:sm: Print current state when the state is invalid

Print current state before returning IPMI_NOT_IN_MY_STATE_ERR so we can
know where this issue is coming from and possibly fix the state machine.

Signed-off-by: Xianting Tian <tian.xianting@h3c.com>
Message-Id: <20200915074441.4090-1-tian.xianting@h3c.com>
[Converted printk() to pr_xxx().]
Signed-off-by: Corey Minyard <cminyard@mvista.com>

drivers/char/ipmi/ipmi_bt_sm.c

@@ -213,8 +213,10 @@ static int bt_start_transaction(struct si_sm_data *bt,
 	if (bt->state == BT_STATE_LONG_BUSY)
 		return IPMI_NODE_BUSY_ERR;
 
-	if (bt->state != BT_STATE_IDLE)
+	if (bt->state != BT_STATE_IDLE) {
+		dev_warn(bt->io->dev, "BT is now in the state %d\n", bt->state);
 		return IPMI_NOT_IN_MY_STATE_ERR;
+	}
 
 	if (bt_debug & BT_DEBUG_MSG) {
 		dev_dbg(bt->io->dev, "+++++++++++++++++ New command\n");

drivers/char/ipmi/ipmi_kcs_sm.c

@@ -268,8 +268,10 @@ static int start_kcs_transaction(struct si_sm_data *kcs, unsigned char *data,
 	if (size > MAX_KCS_WRITE_SIZE)
 		return IPMI_REQ_LEN_EXCEEDED_ERR;
 
-	if ((kcs->state != KCS_IDLE) && (kcs->state != KCS_HOSED))
+	if ((kcs->state != KCS_IDLE) && (kcs->state != KCS_HOSED)) {
+		pr_warn("KCS is now in the state %d\n", kcs->state);
 		return IPMI_NOT_IN_MY_STATE_ERR;
+	}
 
 	if (kcs_debug & KCS_DEBUG_MSG) {
 		printk(KERN_DEBUG "start_kcs_transaction -");

drivers/char/ipmi/ipmi_smic_sm.c

@@ -126,8 +126,10 @@ static int start_smic_transaction(struct si_sm_data *smic,
 	if (size > MAX_SMIC_WRITE_SIZE)
 		return IPMI_REQ_LEN_EXCEEDED_ERR;
 
-	if ((smic->state != SMIC_IDLE) && (smic->state != SMIC_HOSED))
+	if ((smic->state != SMIC_IDLE) && (smic->state != SMIC_HOSED)) {
+		pr_warn("SMIC is now in the state %d\n", smic->state);
 		return IPMI_NOT_IN_MY_STATE_ERR;
+	}
 
 	if (smic_debug & SMIC_DEBUG_MSG) {
 		printk(KERN_DEBUG "start_smic_transaction -");