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From: Hannes Reinecke <hare@suse.de>
To: "Martin K. Petersen" <martin.petersen@oracle.com>
Cc: Christoph Hellwig <hch@lst.de>,
	James Bottomley <james.bottomley@hansenpartnership.com>,
	Bart van Assche <bvanassche@acm.org>,
	John Garry <john.garry@huawei.com>,
	Don Brace <don.brace@microchip.com>,
	linux-scsi@vger.kernel.org, Hannes Reinecke <hare@suse.de>,
	Hannes Reinecke <hare@suse.com>
Subject: [PATCH 17/21] hpsa: drop refcount field from CommandList
Date: Fri,  3 Jul 2020 15:01:18 +0200	[thread overview]
Message-ID: <20200703130122.111448-18-hare@suse.de> (raw)
In-Reply-To: <20200703130122.111448-1-hare@suse.de>

Field is now unused, so drop it.

Signed-off-by: Hannes Reinecke <hare@suse.com>
---
 drivers/scsi/hpsa.c     | 12 ++----------
 drivers/scsi/hpsa_cmd.h |  1 -
 2 files changed, 2 insertions(+), 11 deletions(-)

diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c
index 6f0ef39471ce..52a313428a01 100644
--- a/drivers/scsi/hpsa.c
+++ b/drivers/scsi/hpsa.c
@@ -5518,8 +5518,8 @@ static void hpsa_cmd_init(struct ctlr_info *h, int index,
 {
 	dma_addr_t cmd_dma_handle, err_dma_handle;
 
-	/* Zero out all of commandlist except the last field, refcount */
-	memset(c, 0, offsetof(struct CommandList, refcount));
+	/* Zero out all of commandlist */
+	memset(c, 0, sizeof(struct CommandList));
 	c->Header.tag = cpu_to_le64((u64) (index << DIRECT_LOOKUP_SHIFT));
 	cmd_dma_handle = h->cmd_pool_dhandle + index * sizeof(*c);
 	c->err_info = h->errinfo_pool + index;
@@ -5541,7 +5541,6 @@ static void hpsa_preinitialize_commands(struct ctlr_info *h)
 		struct CommandList *c = h->cmd_pool + i;
 
 		hpsa_cmd_init(h, i, c);
-		atomic_set(&c->refcount, 0);
 	}
 }
 
@@ -6136,19 +6135,12 @@ static struct CommandList *cmd_tagged_alloc(struct ctlr_info *h,
 		return NULL;
 	}
 
-	atomic_inc(&c->refcount);
-
 	hpsa_cmd_partial_init(h, idx, c);
 	return c;
 }
 
 static void cmd_tagged_free(struct ctlr_info *h, struct CommandList *c)
 {
-	/*
-	 * Release our reference to the block.  We don't need to do anything
-	 * else to free it, because it is accessed by index.
-	 */
-	(void)atomic_dec(&c->refcount);
 	c->scsi_cmd = NULL;
 }
 
diff --git a/drivers/scsi/hpsa_cmd.h b/drivers/scsi/hpsa_cmd.h
index 7825cbfea4dc..2575a396f1a5 100644
--- a/drivers/scsi/hpsa_cmd.h
+++ b/drivers/scsi/hpsa_cmd.h
@@ -449,7 +449,6 @@ struct CommandList {
 
 	int abort_pending;
 	struct hpsa_scsi_dev_t *device;
-	atomic_t refcount; /* Must be last to avoid memset in hpsa_cmd_init() */
 } __aligned(COMMANDLIST_ALIGNMENT);
 
 /* Max S/G elements in I/O accelerator command */
-- 
2.16.4


  parent reply	other threads:[~2020-07-03 13:01 UTC|newest]

Thread overview: 38+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-07-03 13:01 [PATCHv6 00/21] scsi: enable reserved commands for LLDDs Hannes Reinecke
2020-07-03 13:01 ` [PATCH 01/21] scsi: drop gdth driver Hannes Reinecke
2020-07-03 13:01 ` [PATCH 02/21] block: add flag for internal commands Hannes Reinecke
2020-07-08  9:27   ` John Garry
2020-07-09 20:02     ` Jens Axboe
2020-07-17 10:32       ` John Garry
2020-07-03 13:01 ` [PATCH 03/21] scsi: add scsi_{get,put}_internal_cmd() helper Hannes Reinecke
2020-07-07 13:54   ` John Garry
2020-11-16  8:56   ` John Garry
2020-11-16  9:03     ` Hannes Reinecke
2020-11-18 12:28       ` John Garry
2020-12-07 10:15       ` John Garry
2020-12-07 15:52         ` Hannes Reinecke
2020-07-03 13:01 ` [PATCH 04/21] fnic: use internal commands Hannes Reinecke
2020-07-03 13:01 ` [PATCH 05/21] fnic: use scsi_host_busy_iter() to traverse commands Hannes Reinecke
2020-07-03 13:01 ` [PATCH 06/21] fnic: check for started requests in fnic_wq_copy_cleanup_handler() Hannes Reinecke
2020-07-03 13:01 ` [PATCH 07/21] scsi: use real inquiry data when initialising devices Hannes Reinecke
2020-07-03 13:01 ` [PATCH 08/21] scsi: Use dummy inquiry data for the host device Hannes Reinecke
2020-07-03 13:01 ` [PATCH 09/21] scsi: revamp host device handling Hannes Reinecke
2020-07-03 13:01 ` [PATCH 10/21] snic: use reserved commands Hannes Reinecke
2020-07-08 11:08   ` John Garry
2020-07-08 11:18     ` Hannes Reinecke
2020-07-03 13:01 ` [PATCH 11/21] snic: use tagset iter for traversing commands Hannes Reinecke
2020-07-03 13:01 ` [PATCH 12/21] snic: check for started requests in snic_hba_reset_cmpl_handler() Hannes Reinecke
2020-07-03 13:01 ` [PATCH 13/21] scsi: implement reserved command handling Hannes Reinecke
2020-07-08  9:39   ` John Garry
2020-07-03 13:01 ` [PATCH 14/21] hpsa: move hpsa_hba_inquiry after scsi_add_host() Hannes Reinecke
2020-07-03 13:01 ` [PATCH 15/21] hpsa: use reserved commands Hannes Reinecke
2020-07-03 13:01 ` [PATCH 16/21] hpsa: use scsi_host_busy_iter() to traverse outstanding commands Hannes Reinecke
2020-07-03 13:01 ` Hannes Reinecke [this message]
2020-07-03 13:01 ` [PATCH 18/21] aacraid: move scsi_add_host() Hannes Reinecke
2020-07-03 13:01 ` [PATCH 19/21] aacraid: store target id in host_scribble Hannes Reinecke
2020-07-03 13:01 ` [PATCH 20/21] aacraid: use scsi_get_internal_cmd() Hannes Reinecke
2020-07-03 13:01 ` [PATCH 21/21] aacraid: use scsi_host_busy_iter() to traverse outstanding commands Hannes Reinecke
2020-10-27 15:27 ` [PATCHv6 00/21] scsi: enable reserved commands for LLDDs John Garry
2020-10-27 15:53   ` Hannes Reinecke
2020-10-27 16:59     ` John Garry
2020-10-27 17:07       ` Hannes Reinecke

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