linux-kernel - [PATCH v2 06/16] dmaengine: bcm-sba-raid: Remove reqs_free_count from sba

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Date:   Tue,  1 Aug 2017 16:07:50 +0530
From:   Anup Patel <anup.patel@...adcom.com>
To:     Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Vinod Koul <vinod.koul@...el.com>,
        Dan Williams <dan.j.williams@...el.com>
Cc:     Florian Fainelli <f.fainelli@...il.com>,
        Scott Branden <sbranden@...adcom.com>,
        Ray Jui <rjui@...adcom.com>, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org,
        dmaengine@...r.kernel.org, bcm-kernel-feedback-list@...adcom.com,
        Anup Patel <anup.patel@...adcom.com>
Subject: [PATCH v2 06/16] dmaengine: bcm-sba-raid: Remove reqs_free_count from sba_device

The reqs_free_count member of sba_device is not used anywhere
hence no point in tracking number of free sba_request.

Signed-off-by: Anup Patel <anup.patel@...adcom.com>
---
 drivers/dma/bcm-sba-raid.c | 8 +-------
 1 file changed, 1 insertion(+), 7 deletions(-)

diff --git a/drivers/dma/bcm-sba-raid.c b/drivers/dma/bcm-sba-raid.c
index 7d08d4e..59ef443 100644
--- a/drivers/dma/bcm-sba-raid.c
+++ b/drivers/dma/bcm-sba-raid.c
@@ -162,7 +162,6 @@ struct sba_device {
 	struct list_head reqs_completed_list;
 	struct list_head reqs_aborted_list;
 	struct list_head reqs_free_list;
-	int reqs_free_count;
 };
 
 /* ====== Command helper routines ===== */
@@ -207,10 +206,8 @@ static struct sba_request *sba_alloc_request(struct sba_device *sba)
 	spin_lock_irqsave(&sba->reqs_lock, flags);
 	req = list_first_entry_or_null(&sba->reqs_free_list,
 				       struct sba_request, node);
-	if (req) {
+	if (req)
 		list_move_tail(&req->node, &sba->reqs_alloc_list);
-		sba->reqs_free_count--;
-	}
 	spin_unlock_irqrestore(&sba->reqs_lock, flags);
 	if (!req)
 		return NULL;
@@ -276,7 +273,6 @@ static void _sba_free_request(struct sba_device *sba,
 	list_move_tail(&req->node, &sba->reqs_free_list);
 	if (list_empty(&sba->reqs_active_list))
 		sba->reqs_fence = false;
-	sba->reqs_free_count++;
 }
 
 static void sba_received_request(struct sba_request *req)
@@ -1523,8 +1519,6 @@ static int sba_prealloc_channel_resources(struct sba_device *sba)
 		list_add_tail(&req->node, &sba->reqs_free_list);
 	}
 
-	sba->reqs_free_count = sba->max_req;
-
 	return 0;
 
 fail_free_cmds_pool:
-- 
2.7.4