[PATCH 1/5] scsi: megaraid_sas - stop cmd processing if hw_crit_error is set

[Sumant Patro]

Checks if hw_crit_error is set before processing cmds.
Added in megasas_queue_command and command completion routines.

Signed-off-by: Sumant Patro <[EMAIL PROTECTED]>
---
drivers/scsi/megaraid/megaraid_sas.c |   13 ++++++++++++-
 1 files changed, 12 insertions(+), 1 deletion(-)

diff -uprN 2.6.orig/drivers/scsi/megaraid/megaraid_sas.c 
2.6.new-p1/drivers/scsi/megaraid/megaraid_sas.c
--- 2.6.orig/drivers/scsi/megaraid/megaraid_sas.c       2007-02-05 
09:51:01.000000000 -0800
+++ 2.6.new-p1/drivers/scsi/megaraid/megaraid_sas.c     2007-02-06 
06:54:07.000000000 -0800
@@ -841,6 +841,11 @@ megasas_queue_command(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 megas
        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(uns
        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;
 



diff -uprN 2.6.orig/drivers/scsi/megaraid/megaraid_sas.c 2.6.new-p1/drivers/scsi/megaraid/megaraid_sas.c
--- 2.6.orig/drivers/scsi/megaraid/megaraid_sas.c	2007-02-05 09:51:01.000000000 -0800
+++ 2.6.new-p1/drivers/scsi/megaraid/megaraid_sas.c	2007-02-06 06:54:07.000000000 -0800
@@ -841,6 +841,11 @@ megasas_queue_command(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 megas
 	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(uns
 	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;