[SCSI] megaraid_sas: do not process cmds if hw_crit_error is set

Checks if hw_crit_error is set.
If it is set, we donot process commands.
Checks added in megasas_queue_command and command completion routines.

Signed-off-by: Sumant Patro <sumant.patro@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

1 files changed, 12 insertions, 1 deletions

diff --git a/drivers/scsi/megaraid/megaraid_sas.c b/drivers/scsi/megaraid/megaraid_sas.c
index 15e24fcc84f3..6ff540140807 100644
--- a/drivers/scsi/megaraid/megaraid_sas.c
+++ b/drivers/scsi/megaraid/megaraid_sas.c
@@ -841,6 +841,11 @@ megasas_queue_command(struct scsi_cmnd *scmd, void (*done) (struct scsi_cmnd *))
 
         instance = (struct megasas_instance *)
             scmd->device->host->hostdata;
+
+        /* Don't process if we have already declared adapter dead */
+        if (instance->hw_crit_error)
+                return SCSI_MLQUEUE_HOST_BUSY;
+
         scmd->scsi_done = done;
         scmd->result = 0;
 
@@ -1282,11 +1287,13 @@ megasas_deplete_reply_queue(struct megasas_instance *instance, u8 alt_status)
         if(instance->instancet->clear_intr(instance->reg_set))
                 return IRQ_NONE;
 
+        if (instance->hw_crit_error)
+                goto out_done;
         /*
          * Schedule the tasklet for cmd completion
          */
         tasklet_schedule(&instance->isr_tasklet);
-
+out_done:
         return IRQ_HANDLED;
 }
 
@@ -1741,6 +1748,10 @@ static void megasas_complete_cmd_dpc(unsigned long instance_addr)
         struct megasas_cmd *cmd;
         struct megasas_instance *instance = (struct megasas_instance *)instance_addr;
 
+        /* If we have already declared adapter dead, donot complete cmds */
+        if (instance->hw_crit_error)
+                return;
+
         producer = *instance->producer;
         consumer = *instance->consumer;