mmc: clean up unused parts of block driver

[powerpc.git] / drivers / scsi / qla4xxx / ql4_mbx.c

diff --git a/drivers/scsi/qla4xxx/ql4_mbx.c b/drivers/scsi/qla4xxx/ql4_mbx.c
index b721dc5..f116ff9 100644 (file)
--- a/drivers/scsi/qla4xxx/ql4_mbx.c
+++ b/drivers/scsi/qla4xxx/ql4_mbx.c
@@ -20,27 +20,39 @@
  * If outCount is 0, this routine completes successfully WITHOUT waiting
  * for the mailbox command to complete.
  **/
-int qla4xxx_mailbox_command(struct scsi_qla_host *ha, uint8_t inCount,
-                           uint8_t outCount, uint32_t *mbx_cmd,
-                           uint32_t *mbx_sts)
+static int qla4xxx_mailbox_command(struct scsi_qla_host *ha, uint8_t inCount,
+                                  uint8_t outCount, uint32_t *mbx_cmd,
+                                  uint32_t *mbx_sts)
 {
        int status = QLA_ERROR;
        uint8_t i;
        u_long wait_count;
        uint32_t intr_status;
        unsigned long flags = 0;
-       DECLARE_WAITQUEUE(wait, current);
-
-       mutex_lock(&ha->mbox_sem);
-
-       /* Mailbox code active */
-       set_bit(AF_MBOX_COMMAND, &ha->flags);
 
        /* Make sure that pointers are valid */
        if (!mbx_cmd || !mbx_sts) {
                DEBUG2(printk("scsi%ld: %s: Invalid mbx_cmd or mbx_sts "
                              "pointer\n", ha->host_no, __func__));
-               goto mbox_exit;
+               return status;
+       }
+       /* Mailbox code active */
+       wait_count = MBOX_TOV * 100;
+
+       while (wait_count--) {
+               mutex_lock(&ha->mbox_sem);
+               if (!test_bit(AF_MBOX_COMMAND, &ha->flags)) {
+                       set_bit(AF_MBOX_COMMAND, &ha->flags);
+                       mutex_unlock(&ha->mbox_sem);
+                       break;
+               }
+               mutex_unlock(&ha->mbox_sem);
+               if (!wait_count) {
+                       DEBUG2(printk("scsi%ld: %s: mbox_sem failed\n",
+                               ha->host_no, __func__));
+                       return status;
+               }
+               msleep(10);
        }
 
        /* To prevent overwriting mailbox registers for a command that has
@@ -73,8 +85,6 @@ int qla4xxx_mailbox_command(struct scsi_qla_host *ha, uint8_t inCount,
        spin_unlock_irqrestore(&ha->hardware_lock, flags);
 
        /* Wait for completion */
-       set_current_state(TASK_UNINTERRUPTIBLE);
-       add_wait_queue(&ha->mailbox_wait_queue, &wait);
 
        /*
         * If we don't want status, don't wait for the mailbox command to
@@ -83,8 +93,6 @@ int qla4xxx_mailbox_command(struct scsi_qla_host *ha, uint8_t inCount,
         */
        if (outCount == 0) {
                status = QLA_SUCCESS;
-               set_current_state(TASK_RUNNING);
-               remove_wait_queue(&ha->mailbox_wait_queue, &wait);
                goto mbox_exit;
        }
        /* Wait for command to complete */
@@ -108,8 +116,6 @@ int qla4xxx_mailbox_command(struct scsi_qla_host *ha, uint8_t inCount,
                spin_unlock_irqrestore(&ha->hardware_lock, flags);
                msleep(10);
        }
-       set_current_state(TASK_RUNNING);
-       remove_wait_queue(&ha->mailbox_wait_queue, &wait);
 
        /* Check for mailbox timeout. */
        if (!test_bit(AF_MBOX_COMMAND_DONE, &ha->flags)) {
@@ -155,14 +161,17 @@ int qla4xxx_mailbox_command(struct scsi_qla_host *ha, uint8_t inCount,
        spin_unlock_irqrestore(&ha->hardware_lock, flags);
 
 mbox_exit:
+       mutex_lock(&ha->mbox_sem);
        clear_bit(AF_MBOX_COMMAND, &ha->flags);
-       clear_bit(AF_MBOX_COMMAND_DONE, &ha->flags);
        mutex_unlock(&ha->mbox_sem);
+       clear_bit(AF_MBOX_COMMAND_DONE, &ha->flags);
 
        return status;
 }
 
 
+#if 0
+
 /**
  * qla4xxx_issue_iocb - issue mailbox iocb command
  * @ha: adapter state pointer.
@@ -236,6 +245,8 @@ int qla4xxx_clear_database_entry(struct scsi_qla_host * ha,
        return QLA_SUCCESS;
 }
 
+#endif  /*  0  */
+
 /**
  * qla4xxx_initialize_fw_cb - initializes firmware control block.
  * @ha: Pointer to host adapter structure.
@@ -563,6 +574,7 @@ int qla4xxx_set_ddb_entry(struct scsi_qla_host * ha, uint16_t fw_ddb_index,
        return qla4xxx_mailbox_command(ha, 4, 1, &mbox_cmd[0], &mbox_sts[0]);
 }
 
+#if 0
 int qla4xxx_conn_open_session_login(struct scsi_qla_host * ha,
                                    uint16_t fw_ddb_index)
 {
@@ -587,6 +599,7 @@ int qla4xxx_conn_open_session_login(struct scsi_qla_host * ha,
 
                return status;
 }
+#endif  /*  0  */
 
 /**
  * qla4xxx_get_crash_record - retrieves crash record.
@@ -642,6 +655,7 @@ exit_get_crash_record:
                                  crash_record, crash_record_dma);
 }
 
+#if 0
 /**
  * qla4xxx_get_conn_event_log - retrieves connection event log
  * @ha: Pointer to host adapter structure.
@@ -731,6 +745,7 @@ exit_get_event_log:
                dma_free_coherent(&ha->pdev->dev, event_log_size, event_log,
                                  event_log_dma);
 }
+#endif  /*  0  */
 
 /**
  * qla4xxx_reset_lun - issues LUN Reset
@@ -827,7 +842,8 @@ int qla4xxx_get_fw_version(struct scsi_qla_host * ha)
        return QLA_SUCCESS;
 }
 
-int qla4xxx_get_default_ddb(struct scsi_qla_host *ha, dma_addr_t dma_addr)
+static int qla4xxx_get_default_ddb(struct scsi_qla_host *ha,
+                                  dma_addr_t dma_addr)
 {
        uint32_t mbox_cmd[MBOX_REG_COUNT];
        uint32_t mbox_sts[MBOX_REG_COUNT];
@@ -848,7 +864,7 @@ int qla4xxx_get_default_ddb(struct scsi_qla_host *ha, dma_addr_t dma_addr)
        return QLA_SUCCESS;
 }
 
-int qla4xxx_req_ddb_entry(struct scsi_qla_host *ha, uint32_t *ddb_index)
+static int qla4xxx_req_ddb_entry(struct scsi_qla_host *ha, uint32_t *ddb_index)
 {
        uint32_t mbox_cmd[MBOX_REG_COUNT];
        uint32_t mbox_sts[MBOX_REG_COUNT];