[PATCH 9/17] scsi: arcmsr: add ACB_F_MSG_GET_CONFIG to acb->acb_flags for for message interrupt checking before schedule work for get device map

[Ching Huang]

From: Ching Huang <ching2...@areca.com.tw>

add ACB_F_MSG_GET_CONFIG to acb->acb_flags for for message interrupt checking 
before schedule work for get device map

Signed-off-by: Ching Huang <ching2...@areca.com.tw>
---

diff -uprN a/drivers/scsi/arcmsr/arcmsr.h b/drivers/scsi/arcmsr/arcmsr.h
--- a/drivers/scsi/arcmsr/arcmsr.h      2017-12-05 15:26:32.000000000 +0800
+++ b/drivers/scsi/arcmsr/arcmsr.h      2017-12-05 15:27:04.000000000 +0800
@@ -782,6 +782,7 @@ struct AdapterControlBlock
        /* iop init */
        #define ACB_F_ABORT                             0x0200
        #define ACB_F_FIRMWARE_TRAP                     0x0400
+       #define ACB_F_MSG_GET_CONFIG            0x1000
        struct CommandControlBlock *                    
pccb_pool[ARCMSR_MAX_FREECCB_NUM];
        /* used for memory free */
        struct list_head                ccb_free_list;
diff -uprN a/drivers/scsi/arcmsr/arcmsr_hba.c b/drivers/scsi/arcmsr/arcmsr_hba.c
--- a/drivers/scsi/arcmsr/arcmsr_hba.c  2017-12-05 11:46:18.000000000 +0800
+++ b/drivers/scsi/arcmsr/arcmsr_hba.c  2017-12-05 11:46:06.000000000 +0800
@@ -743,6 +743,7 @@ static void arcmsr_message_isr_bh_fn(str
        struct scsi_device *psdev;
        char diff, temp;
 
+       acb->acb_flags &= ~ACB_F_MSG_GET_CONFIG;
        switch (acb->adapter_type) {
        case ACB_ADAPTER_TYPE_A: {
                struct MessageUnit_A __iomem *reg  = acb->pmuA;
@@ -2328,7 +2329,8 @@ static void arcmsr_hbaA_message_isr(stru
        struct MessageUnit_A __iomem *reg  = acb->pmuA;
        /*clear interrupt and message state*/
        writel(ARCMSR_MU_OUTBOUND_MESSAGE0_INT, &reg->outbound_intstatus);
-       schedule_work(&acb->arcmsr_do_message_isr_bh);
+       if (acb->acb_flags & ACB_F_MSG_GET_CONFIG)
+               schedule_work(&acb->arcmsr_do_message_isr_bh);
 }
 static void arcmsr_hbaB_message_isr(struct AdapterControlBlock *acb)
 {
@@ -2336,7 +2338,8 @@ static void arcmsr_hbaB_message_isr(stru
 
        /*clear interrupt and message state*/
        writel(ARCMSR_MESSAGE_INT_CLEAR_PATTERN, reg->iop2drv_doorbell);
-       schedule_work(&acb->arcmsr_do_message_isr_bh);
+       if (acb->acb_flags & ACB_F_MSG_GET_CONFIG)
+               schedule_work(&acb->arcmsr_do_message_isr_bh);
 }
 /*
 
**********************************************************************************
@@ -2352,7 +2355,8 @@ static void arcmsr_hbaC_message_isr(stru
        struct MessageUnit_C __iomem *reg  = acb->pmuC;
        /*clear interrupt and message state*/
        writel(ARCMSR_HBCMU_IOP2DRV_MESSAGE_CMD_DONE_DOORBELL_CLEAR, 
&reg->outbound_doorbell_clear);
-       schedule_work(&acb->arcmsr_do_message_isr_bh);
+       if (acb->acb_flags & ACB_F_MSG_GET_CONFIG)
+               schedule_work(&acb->arcmsr_do_message_isr_bh);
 }
 
 static void arcmsr_hbaD_message_isr(struct AdapterControlBlock *acb)
@@ -2361,7 +2365,8 @@ static void arcmsr_hbaD_message_isr(stru
 
        writel(ARCMSR_ARC1214_IOP2DRV_MESSAGE_CMD_DONE, reg->outbound_doorbell);
        readl(reg->outbound_doorbell);
-       schedule_work(&acb->arcmsr_do_message_isr_bh);
+       if (acb->acb_flags & ACB_F_MSG_GET_CONFIG)
+               schedule_work(&acb->arcmsr_do_message_isr_bh);
 }
 
 static void arcmsr_hbaE_message_isr(struct AdapterControlBlock *acb)
@@ -2369,7 +2374,8 @@ static void arcmsr_hbaE_message_isr(stru
        struct MessageUnit_E __iomem *reg  = acb->pmuE;
 
        writel(0, &reg->host_int_status);
-       schedule_work(&acb->arcmsr_do_message_isr_bh);
+       if (acb->acb_flags & ACB_F_MSG_GET_CONFIG)
+               schedule_work(&acb->arcmsr_do_message_isr_bh);
 }
 
 static int arcmsr_hbaA_handle_isr(struct AdapterControlBlock *acb)
@@ -3826,6 +3832,7 @@ static void arcmsr_hbaA_request_device_m
                        return;
                }
                writel(ARCMSR_INBOUND_MESG0_GET_CONFIG, &reg->inbound_msgaddr0);
+               acb->acb_flags |= ACB_F_MSG_GET_CONFIG;
                mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6 * 
HZ));
        }
        return;
@@ -3848,6 +3855,7 @@ static void arcmsr_hbaB_request_device_m
                        return;
                }
                writel(ARCMSR_MESSAGE_GET_CONFIG, reg->drv2iop_doorbell);
+               acb->acb_flags |= ACB_F_MSG_GET_CONFIG;
                mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6 * 
HZ));
        }
        return;
@@ -3871,6 +3879,7 @@ static void arcmsr_hbaC_request_device_m
                }
                writel(ARCMSR_INBOUND_MESG0_GET_CONFIG, &reg->inbound_msgaddr0);
                writel(ARCMSR_HBCMU_DRV2IOP_MESSAGE_CMD_DONE, 
&reg->inbound_doorbell);
+               acb->acb_flags |= ACB_F_MSG_GET_CONFIG;
                mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6 * 
HZ));
        }
        return;
@@ -3900,6 +3909,7 @@ static void arcmsr_hbaD_request_device_m
                }
                writel(ARCMSR_INBOUND_MESG0_GET_CONFIG,
                        reg->inbound_msgaddr0);
+               acb->acb_flags |= ACB_F_MSG_GET_CONFIG;
                mod_timer(&acb->eternal_timer, jiffies +
                        msecs_to_jiffies(6 * HZ));
        }
@@ -3930,6 +3940,7 @@ static void arcmsr_hbaE_request_device_m
                writel(ARCMSR_INBOUND_MESG0_GET_CONFIG, &reg->inbound_msgaddr0);
                acb->out_doorbell ^= ARCMSR_HBEMU_DRV2IOP_MESSAGE_CMD_DONE;
                writel(acb->out_doorbell, &reg->iobound_doorbell);
+               acb->acb_flags |= ACB_F_MSG_GET_CONFIG;
                mod_timer(&acb->eternal_timer, jiffies +
                        msecs_to_jiffies(6 * HZ));
        }