[SCSI] megaraid_sas: use the firmware boot timeout when waiting for commands

use the constant MEGASAS_RESET_WAIT_TIME when waiting for firmware
commands to complete (currently 3 minutes).

Signed-off-by Bo Yang<bo.yang@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>

diff --git a/drivers/scsi/megaraid/megaraid_sas.c b/drivers/scsi/megaraid/megaraid_sas.c
index 23056721a8c9c0b0da9b3ec43cf39423f416fae7..efd41c1f946cbbd29fc365ed6f5fd0f20ade83f9 100644 (file)
--- a/drivers/scsi/megaraid/megaraid_sas.c
+++ b/drivers/scsi/megaraid/megaraid_sas.c
@@ -1820,6 +1820,7 @@ megasas_transition_to_ready(struct megasas_instance* instance)
        u8 max_wait;
        u32 fw_state;
        u32 cur_state;
+       u32 abs_state, curr_abs_state;
 
        fw_state = instance->instancet->read_fw_status_reg(instance->reg_set) & MFI_STATE_MASK;
 
@@ -1829,6 +1830,9 @@ megasas_transition_to_ready(struct megasas_instance* instance)
 
        while (fw_state != MFI_STATE_READY) {
 
+               abs_state =
+               instance->instancet->read_fw_status_reg(instance->reg_set);
+
                switch (fw_state) {
 
                case MFI_STATE_FAULT:
@@ -1854,7 +1858,7 @@ megasas_transition_to_ready(struct megasas_instance* instance)
                                        &instance->reg_set->inbound_doorbell);
                        }
 
-                       max_wait = 2;
+                       max_wait = MEGASAS_RESET_WAIT_TIME;
                        cur_state = MFI_STATE_WAIT_HANDSHAKE;
                        break;
 
@@ -1869,7 +1873,7 @@ megasas_transition_to_ready(struct megasas_instance* instance)
                                writel(MFI_INIT_HOTPLUG,
                                        &instance->reg_set->inbound_doorbell);
 
-                       max_wait = 10;
+                       max_wait = MEGASAS_RESET_WAIT_TIME;
                        cur_state = MFI_STATE_BOOT_MESSAGE_PENDING;
                        break;
 
@@ -1888,7 +1892,7 @@ megasas_transition_to_ready(struct megasas_instance* instance)
                                writel(MFI_RESET_FLAGS,
                                        &instance->reg_set->inbound_doorbell);
 
-                       max_wait = 60;
+                       max_wait = MEGASAS_RESET_WAIT_TIME;
                        cur_state = MFI_STATE_OPERATIONAL;
                        break;
 
@@ -1896,32 +1900,32 @@ megasas_transition_to_ready(struct megasas_instance* instance)
                        /*
                         * This state should not last for more than 2 seconds
                         */
-                       max_wait = 2;
+                       max_wait = MEGASAS_RESET_WAIT_TIME;
                        cur_state = MFI_STATE_UNDEFINED;
                        break;
 
                case MFI_STATE_BB_INIT:
-                       max_wait = 2;
+                       max_wait = MEGASAS_RESET_WAIT_TIME;
                        cur_state = MFI_STATE_BB_INIT;
                        break;
 
                case MFI_STATE_FW_INIT:
-                       max_wait = 20;
+                       max_wait = MEGASAS_RESET_WAIT_TIME;
                        cur_state = MFI_STATE_FW_INIT;
                        break;
 
                case MFI_STATE_FW_INIT_2:
-                       max_wait = 20;
+                       max_wait = MEGASAS_RESET_WAIT_TIME;
                        cur_state = MFI_STATE_FW_INIT_2;
                        break;
 
                case MFI_STATE_DEVICE_SCAN:
-                       max_wait = 20;
+                       max_wait = MEGASAS_RESET_WAIT_TIME;
                        cur_state = MFI_STATE_DEVICE_SCAN;
                        break;
 
                case MFI_STATE_FLUSH_CACHE:
-                       max_wait = 20;
+                       max_wait = MEGASAS_RESET_WAIT_TIME;
                        cur_state = MFI_STATE_FLUSH_CACHE;
                        break;
 
@@ -1937,8 +1941,10 @@ megasas_transition_to_ready(struct megasas_instance* instance)
                for (i = 0; i < (max_wait * 1000); i++) {
                        fw_state = instance->instancet->read_fw_status_reg(instance->reg_set) &  
                                        MFI_STATE_MASK ;
+               curr_abs_state =
+               instance->instancet->read_fw_status_reg(instance->reg_set);
 
-                       if (fw_state == cur_state) {
+                       if (abs_state == curr_abs_state) {
                                msleep(1);
                        } else
                                break;
@@ -1947,7 +1953,7 @@ megasas_transition_to_ready(struct megasas_instance* instance)
                /*
                 * Return error if fw_state hasn't changed after max_wait
                 */
-               if (fw_state == cur_state) {
+               if (curr_abs_state == abs_state) {
                        printk(KERN_DEBUG "FW state [%d] hasn't changed "
                               "in %d secs\n", fw_state, max_wait);
                        return -ENODEV;