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From: Anup Patel <anup.patel@broadcom.com>
To: Rob Herring <robh+dt@kernel.org>,
	Mark Rutland <mark.rutland@arm.com>,
	Vinod Koul <vinod.koul@intel.com>,
	Dan Williams <dan.j.williams@intel.com>
Cc: Florian Fainelli <f.fainelli@gmail.com>,
	Scott Branden <sbranden@broadcom.com>,
	Ray Jui <rjui@broadcom.com>,
	linux-kernel@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org,
	dmaengine@vger.kernel.org, bcm-kernel-feedback-list@broadcom.com,
	Anup Patel <anup.patel@broadcom.com>
Subject: [PATCH v2 06/16] dmaengine: bcm-sba-raid: Remove reqs_free_count from sba_device
Date: Tue,  1 Aug 2017 16:07:50 +0530	[thread overview]
Message-ID: <1501583880-32072-7-git-send-email-anup.patel@broadcom.com> (raw)
In-Reply-To: <1501583880-32072-1-git-send-email-anup.patel@broadcom.com>

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@broadcom.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

  parent reply	other threads:[~2017-08-01 10:39 UTC|newest]

Thread overview: 35+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-08-01 10:37 [PATCH v2 00/16] Broadcom SBA-RAID driver improvements Anup Patel
2017-08-01 10:37 ` [PATCH v2 01/16] dmaengine: bcm-sba-raid: Minor improvments in comments Anup Patel
2017-08-17  3:44   ` Vinod Koul
2017-08-18  4:54     ` Anup Patel
2017-08-01 10:37 ` [PATCH v2 02/16] dmaengine: bcm-sba-raid: Reduce locking context in sba_alloc_request() Anup Patel
2017-08-01 10:37 ` [PATCH v2 03/16] dmaengine: bcm-sba-raid: Common flags for sba_request state and fence Anup Patel
2017-08-17  3:45   ` Vinod Koul
2017-08-18  4:56     ` Anup Patel
2017-08-18  5:25       ` Vinod Koul
2017-08-18  6:05         ` Anup Patel
2017-08-01 10:37 ` [PATCH v2 04/16] dmaengine: bcm-sba-raid: Remove redundant next_count from sba_request Anup Patel
2017-08-01 10:37 ` [PATCH v2 05/16] dmaengine: bcm-sba-raid: Remove redundant resp_dma " Anup Patel
2017-08-01 10:37 ` Anup Patel [this message]
2017-08-01 10:37 ` [PATCH v2 07/16] dmaengine: bcm-sba-raid: Allow arbitrary number free sba_request Anup Patel
2017-08-01 10:37 ` [PATCH v2 08/16] dmaengine: bcm-sba-raid: Increase number of " Anup Patel
2017-08-01 10:37 ` [PATCH v2 09/16] dmaengine: bcm-sba-raid: Improve sba_issue_pending() run duration Anup Patel
2017-08-17  6:36   ` Vinod Koul
2017-08-18  6:12     ` Anup Patel
2017-08-01 10:37 ` [PATCH v2 10/16] dmaengine: bcm-sba-raid: Alloc resources before registering DMA device Anup Patel
2017-08-17  6:38   ` Vinod Koul
2017-08-18  5:01     ` Anup Patel
2017-08-01 10:37 ` [PATCH v2 11/16] dmaengine: bcm-sba-raid: Peek mbox when we have no free requests Anup Patel
2017-08-17  6:40   ` Vinod Koul
2017-08-18 11:36     ` Anup Patel
2017-08-01 10:37 ` [PATCH v2 12/16] dmaengine: bcm-sba-raid: Pre-ack async tx descriptor Anup Patel
2017-08-01 10:37 ` [PATCH v2 13/16] dmaengine: bcm-sba-raid: Re-factor sba_process_deferred_requests() Anup Patel
2017-08-01 10:37 ` [PATCH v2 14/16] dmaengine: bcm-sba-raid: Remove redundant SBA_REQUEST_STATE_RECEIVED Anup Patel
2017-08-01 10:37 ` [PATCH v2 15/16] dmaengine: bcm-sba-raid: Add debugfs support Anup Patel
2017-08-17  8:01   ` Vinod Koul
2017-08-18  5:03     ` Anup Patel
2017-08-18  5:26       ` Vinod Koul
2017-08-18  5:25         ` Anup Patel
2017-09-07 19:37         ` Greg KH
2017-09-08  4:09           ` Vinod Koul
2017-08-01 10:38 ` [PATCH v2 16/16] dmaengine: bcm-sba-raid: Explicitly ACK mailbox message after sending Anup Patel

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