mtip32xx: Fix broken service thread handling

Service thread does not detect the need for taskfile error hanlding. Fixed the
flag condition to process taskfile error.

Signed-off-by: Selvan Mani <smani@micron.com>
Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com>
Cc: stable@vger.kernel.org
Signed-off-by: Jens Axboe <axboe@fb.com>

diff --git a/drivers/block/mtip32xx/mtip32xx.c b/drivers/block/mtip32xx/mtip32xx.c
index 9b180db..dc445b4 100644 (file)
--- a/drivers/block/mtip32xx/mtip32xx.c
+++ b/drivers/block/mtip32xx/mtip32xx.c
@@ -2917,9 +2917,7 @@ static int mtip_service_thread(void *data)
                 * is in progress nor error handling is active
                 */
                wait_event_interruptible(port->svc_wait, (port->flags) &&
-                       !(port->flags & MTIP_PF_PAUSE_IO));
-
-               set_bit(MTIP_PF_SVC_THD_ACTIVE_BIT, &port->flags);
+                       (port->flags & MTIP_PF_SVC_THD_WORK));
 
                if (kthread_should_stop() ||
                        test_bit(MTIP_PF_SVC_THD_STOP_BIT, &port->flags))
@@ -2929,6 +2927,8 @@ static int mtip_service_thread(void *data)
                                &dd->dd_flag)))
                        goto st_out;
 
+               set_bit(MTIP_PF_SVC_THD_ACTIVE_BIT, &port->flags);
+
 restart_eh:
                /* Demux bits: start with error handling */
                if (test_bit(MTIP_PF_EH_ACTIVE_BIT, &port->flags)) {

diff --git a/drivers/block/mtip32xx/mtip32xx.h b/drivers/block/mtip32xx/mtip32xx.h
index 3274784..8635239 100644 (file)
--- a/drivers/block/mtip32xx/mtip32xx.h
+++ b/drivers/block/mtip32xx/mtip32xx.h
@@ -144,6 +144,11 @@ enum {
        MTIP_PF_REBUILD_BIT         = 6,
        MTIP_PF_SVC_THD_STOP_BIT    = 8,
 
+       MTIP_PF_SVC_THD_WORK    = ((1 << MTIP_PF_EH_ACTIVE_BIT) |
+                                 (1 << MTIP_PF_ISSUE_CMDS_BIT) |
+                                 (1 << MTIP_PF_REBUILD_BIT) |
+                                 (1 << MTIP_PF_SVC_THD_STOP_BIT)),
+
        /* below are bit numbers in 'dd_flag' defined in driver_data */
        MTIP_DDF_SEC_LOCK_BIT       = 0,
        MTIP_DDF_REMOVE_PENDING_BIT = 1,