From: Brian King <brking@linux.vnet.ibm.com>
Date: Wed, 15 Mar 2017 21:58:36 +0000 (-0500)
Subject: scsi: ipr: Fix missed EH wakeup
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=66a0d59cdd12546ddf01d229de28b07ccf6d637f;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git

scsi: ipr: Fix missed EH wakeup

Following a command abort or device reset, ipr's EH handlers wait for
the commands getting aborted to get sent back from the adapter prior to
returning from the EH handler. This fixes up some cases where the
completion handler was not getting called, which would have resulted in
the EH thread waiting until it timed out, greatly extending EH time.

Signed-off-by: Brian King <brking@linux.vnet.ibm.com>
Reviewed-by: Wendy Xiong <wenxiong@linux.vnet.ibm.com>
Tested-by: Wendy Xiong <wenxiong@linux.vnet.ibm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
---

diff --git a/drivers/scsi/ipr.c b/drivers/scsi/ipr.c
index b29afafc2885..0688e0aa76a5 100644
--- a/drivers/scsi/ipr.c
+++ b/drivers/scsi/ipr.c
@@ -836,8 +836,10 @@ static void ipr_sata_eh_done(struct ipr_cmnd *ipr_cmd)
 
 	qc->err_mask |= AC_ERR_OTHER;
 	sata_port->ioasa.status |= ATA_BUSY;
-	list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
 	ata_qc_complete(qc);
+	if (ipr_cmd->eh_comp)
+		complete(ipr_cmd->eh_comp);
+	list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
 }
 
 /**
@@ -5947,8 +5949,10 @@ static void ipr_erp_done(struct ipr_cmnd *ipr_cmd)
 		res->in_erp = 0;
 	}
 	scsi_dma_unmap(ipr_cmd->scsi_cmd);
-	list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
 	scsi_cmd->scsi_done(scsi_cmd);
+	if (ipr_cmd->eh_comp)
+		complete(ipr_cmd->eh_comp);
+	list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
 }
 
 /**
@@ -6338,8 +6342,10 @@ static void ipr_erp_start(struct ipr_ioa_cfg *ioa_cfg,
 	}
 
 	scsi_dma_unmap(ipr_cmd->scsi_cmd);
-	list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
 	scsi_cmd->scsi_done(scsi_cmd);
+	if (ipr_cmd->eh_comp)
+		complete(ipr_cmd->eh_comp);
+	list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
 }
 
 /**
@@ -6365,8 +6371,10 @@ static void ipr_scsi_done(struct ipr_cmnd *ipr_cmd)
 		scsi_dma_unmap(scsi_cmd);
 
 		spin_lock_irqsave(ipr_cmd->hrrq->lock, lock_flags);
-		list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
 		scsi_cmd->scsi_done(scsi_cmd);
+		if (ipr_cmd->eh_comp)
+			complete(ipr_cmd->eh_comp);
+		list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
 		spin_unlock_irqrestore(ipr_cmd->hrrq->lock, lock_flags);
 	} else {
 		spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);