[PATCH 3.19.y-ckt 057/170] mtip32xx: Remove unwanted code from taskfile error handler

[Kamal Mostafa]

3.19.8-ckt18 -stable review patch.  If anyone has any objections, please let me know.

---8<------------------------------------------------------------

From: Asai Thambi SP <asamymuthupa@xxxxxxxxxx>

commit e35b94738a2f7caa12017f69ef385cb6b8028965 upstream.

Remove setting and clearing MTIP_PF_EH_ACTIVE_BIT flag in
mtip_handle_tfe() as they are redundant. Also avoid waking
up service thread from mtip_handle_tfe() because it is
already woken up in case of taskfile error.

Signed-off-by: Selvan Mani <smani@xxxxxxxxxx>
Signed-off-by: Rajesh Kumar Sambandam <rsambandam@xxxxxxxxxx>
Signed-off-by: Asai Thambi S P <asamymuthupa@xxxxxxxxxx>
Signed-off-by: Jens Axboe <axboe@xxxxxx>
Signed-off-by: Kamal Mostafa <kamal@xxxxxxxxxxxxx>
---
 drivers/block/mtip32xx/mtip32xx.c | 9 +--------
 1 file changed, 1 insertion(+), 8 deletions(-)

diff --git a/drivers/block/mtip32xx/mtip32xx.c b/drivers/block/mtip32xx/mtip32xx.c
index d3fe4b8..d221429 100644
--- a/drivers/block/mtip32xx/mtip32xx.c
+++ b/drivers/block/mtip32xx/mtip32xx.c
@@ -621,8 +621,6 @@ static void mtip_handle_tfe(struct driver_data *dd)
 
 	port = dd->port;
 
-	set_bit(MTIP_PF_EH_ACTIVE_BIT, &port->flags);
-
 	if (test_bit(MTIP_PF_IC_ACTIVE_BIT, &port->flags) &&
 			test_bit(MTIP_TAG_INTERNAL, port->allocated)) {
 		cmd = mtip_cmd_from_tag(dd, MTIP_TAG_INTERNAL);
@@ -632,7 +630,7 @@ static void mtip_handle_tfe(struct driver_data *dd)
 			cmd->comp_func(port, MTIP_TAG_INTERNAL,
 					cmd, PORT_IRQ_TF_ERR);
 		}
-		goto handle_tfe_exit;
+		return;
 	}
 
 	/* clear the tag accumulator */
@@ -775,11 +773,6 @@ static void mtip_handle_tfe(struct driver_data *dd)
 		}
 	}
 	print_tags(dd, "reissued (TFE)", tagaccum, cmd_cnt);
-
-handle_tfe_exit:
-	/* clear eh_active */
-	clear_bit(MTIP_PF_EH_ACTIVE_BIT, &port->flags);
-	wake_up_interruptible(&port->svc_wait);
 }
 
 /*
-- 
2.7.4