[PATCH 08/10] mtip32xx: Handle FTL rebuild failure state during device initialization

[Asai Thambi SP]

Allow device initialization to finish gracefully when it is in
FTL rebuild failure state. Also, recover device out of this state
after successfully secure erasing it.

Signed-off-by: Selvan Mani <sm...@micron.com>
Signed-off-by: Vignesh Gunasekaran <vgunaseka...@micron.com>
Signed-off-by: Asai Thambi S P <asamymuth...@micron.com>
---
 drivers/block/mtip32xx/mtip32xx.c |   11 ++++++-----
 1 files changed, 6 insertions(+), 5 deletions(-)

diff --git a/drivers/block/mtip32xx/mtip32xx.c 
b/drivers/block/mtip32xx/mtip32xx.c
index 85c1794..96721c0 100644
--- a/drivers/block/mtip32xx/mtip32xx.c
+++ b/drivers/block/mtip32xx/mtip32xx.c
@@ -699,7 +699,7 @@ static void mtip_handle_tfe(struct driver_data *dd)
             fail_reason = "thermal shutdown";
         }
         if (buf[288] == 0xBF) {
-            set_bit(MTIP_DDF_SEC_LOCK_BIT, &dd->dd_flag);
+            set_bit(MTIP_DDF_REBUILD_FAILED_BIT, &dd->dd_flag);
             dev_info(&dd->pdev->dev,
                 "Drive indicates rebuild has failed. Secure erase 
required.\n");
             fail_all_ncq_cmds = 1;
@@ -1034,6 +1034,7 @@ static bool mtip_pause_ncq(struct mtip_port *port,
              fis->features == 0x62 || fis->features == 0x26 ||
              fis->features == 0x12))) {
         clear_bit(MTIP_DDF_SEC_LOCK_BIT, &port->dd->dd_flag);
+        clear_bit(MTIP_DDF_REBUILD_FAILED_BIT, &port->dd->dd_flag);
         mtip_bdev_unclaim(port->dd);
         /* Com reset after secure erase or lowlevel format */
         mtip_restart_port(port);
@@ -1218,6 +1219,7 @@ static int mtip_exec_internal_command(struct mtip_port 
*port,
         if ((rv = wait_for_completion_interruptible_timeout(
                 &wait,
                 msecs_to_jiffies(timeout))) <= 0) {
+
             if (rv == -ERESTARTSYS) { /* interrupted */
                 dev_err(&dd->pdev->dev,
                     "Internal command [%02X] was interrupted after %u ms\n",
@@ -3153,7 +3155,7 @@ static int mtip_hw_get_identify(struct driver_data *dd)
         if (buf[288] == 0xBF) {
             dev_info(&dd->pdev->dev,
                 "Drive indicates rebuild has failed.\n");
-            /* TODO */
+            set_bit(MTIP_DDF_REBUILD_FAILED_BIT, &dd->dd_flag);
         }
     }
 
@@ -3756,10 +3758,9 @@ static int mtip_submit_request(struct blk_mq_hw_ctx 
*hctx, struct request *rq)
                 rq_data_dir(rq))) {
             return -ENODATA;
         }
-        if (unlikely(test_bit(MTIP_DDF_SEC_LOCK_BIT, &dd->dd_flag)))
+        if (unlikely(test_bit(MTIP_DDF_SEC_LOCK_BIT, &dd->dd_flag) ||
+            test_bit(MTIP_DDF_REBUILD_FAILED_BIT, &dd->dd_flag)))
             return -ENODATA;
-        if (test_bit(MTIP_DDF_REBUILD_FAILED_BIT, &dd->dd_flag))
-            return -ENXIO;
     }
 
     if (rq->cmd_flags & REQ_DISCARD) {
-- 
1.7.1