[PATCH 2/4] scsi: arcmsr: Fix device hot-plug monitoring timer stop

[ching Huang]

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

Fix device hot-plug monitoring timer stop.

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

diff --git a/drivers/scsi/arcmsr/arcmsr.h b/drivers/scsi/arcmsr/arcmsr.h
index 9220bcf..0ae401d 100755
--- a/drivers/scsi/arcmsr/arcmsr.h
+++ b/drivers/scsi/arcmsr/arcmsr.h
@@ -836,8 +836,6 @@ struct AdapterControlBlock
 #define        FW_NORMAL                       0x0000
 #define        FW_BOG                          0x0001
 #define        FW_DEADLOCK                     0x0010
-       atomic_t                rq_map_token;
-       atomic_t                ante_token_value;
        uint32_t                maxOutstanding;
        int                     vector_count;
        uint32_t                maxFreeCCB;
diff --git a/drivers/scsi/arcmsr/arcmsr_hba.c b/drivers/scsi/arcmsr/arcmsr_hba.c
index 5076480..86f84d7 100755
--- a/drivers/scsi/arcmsr/arcmsr_hba.c
+++ b/drivers/scsi/arcmsr/arcmsr_hba.c
@@ -777,7 +777,6 @@ static void arcmsr_message_isr_bh_fn(struct work_struct 
*work)
        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;
@@ -815,7 +814,6 @@ static void arcmsr_message_isr_bh_fn(struct work_struct 
*work)
                break;
                }
        }
-       atomic_inc(&acb->rq_map_token);
        if (readl(signature) != ARCMSR_SIGNATURE_GET_CONFIG)
                return;
        for (target = 0; target < ARCMSR_MAX_TARGETID - 1;
@@ -846,6 +844,7 @@ static void arcmsr_message_isr_bh_fn(struct work_struct 
*work)
                devicemap++;
                acb_dev_map++;
        }
+       acb->acb_flags &= ~ACB_F_MSG_GET_CONFIG;
 }
 
 static int
@@ -898,8 +897,6 @@ out_free_irq:
 static void arcmsr_init_get_devmap_timer(struct AdapterControlBlock *pacb)
 {
        INIT_WORK(&pacb->arcmsr_do_message_isr_bh, arcmsr_message_isr_bh_fn);
-       atomic_set(&pacb->rq_map_token, 16);
-       atomic_set(&pacb->ante_token_value, 16);
        pacb->fw_flag = FW_NORMAL;
        timer_setup(&pacb->eternal_timer, arcmsr_request_device_map, 0);
        pacb->eternal_timer.expires = jiffies + msecs_to_jiffies(6 * HZ);
@@ -3925,24 +3922,10 @@ static void arcmsr_wait_firmware_ready(struct 
AdapterControlBlock *acb)
 static void arcmsr_request_device_map(struct timer_list *t)
 {
        struct AdapterControlBlock *acb = from_timer(acb, t, eternal_timer);
-       if (unlikely(atomic_read(&acb->rq_map_token) == 0) ||
-               (acb->acb_flags & ACB_F_BUS_RESET) ||
-               (acb->acb_flags & ACB_F_ABORT)) {
-               mod_timer(&acb->eternal_timer,
-                       jiffies + msecs_to_jiffies(6 * HZ));
+       if (acb->acb_flags & (ACB_F_MSG_GET_CONFIG | ACB_F_BUS_RESET | 
ACB_F_ABORT)) {
+               mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6 * 
HZ));
        } else {
                acb->fw_flag = FW_NORMAL;
-               if (atomic_read(&acb->ante_token_value) ==
-                       atomic_read(&acb->rq_map_token)) {
-                       atomic_set(&acb->rq_map_token, 16);
-               }
-               atomic_set(&acb->ante_token_value,
-                       atomic_read(&acb->rq_map_token));
-               if (atomic_dec_and_test(&acb->rq_map_token)) {
-                       mod_timer(&acb->eternal_timer, jiffies +
-                               msecs_to_jiffies(6 * HZ));
-                       return;
-               }
                switch (acb->adapter_type) {
                case ACB_ADAPTER_TYPE_A: {
                        struct MessageUnit_A __iomem *reg = acb->pmuA;
@@ -4362,8 +4345,6 @@ wait_reset_done:
                        goto wait_reset_done;
                }
                arcmsr_iop_init(acb);
-               atomic_set(&acb->rq_map_token, 16);
-               atomic_set(&acb->ante_token_value, 16);
                acb->fw_flag = FW_NORMAL;
                mod_timer(&acb->eternal_timer, jiffies +
                        msecs_to_jiffies(6 * HZ));
@@ -4372,8 +4353,6 @@ wait_reset_done:
                pr_notice("arcmsr: scsi bus reset eh returns with success\n");
        } else {
                acb->acb_flags &= ~ACB_F_BUS_RESET;
-               atomic_set(&acb->rq_map_token, 16);
-               atomic_set(&acb->ante_token_value, 16);
                acb->fw_flag = FW_NORMAL;
                mod_timer(&acb->eternal_timer, jiffies +
                        msecs_to_jiffies(6 * HZ));