dmaengine: bcm-sba-raid: Remove redundant SBA_REQUEST_STATE_RECEIVED

The SBA_REQUEST_STATE_RECEIVED state is now redundant because
received sba_request are immediately freed or moved to completed
list in sba_process_received_request().

This patch removes redundant SBA_REQUEST_STATE_RECEIVED state.

Signed-off-by: Anup Patel <anup.patel@broadcom.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>

diff --git a/drivers/dma/bcm-sba-raid.c b/drivers/dma/bcm-sba-raid.c
index abed039..8d2487d 100644 (file)
--- a/drivers/dma/bcm-sba-raid.c
+++ b/drivers/dma/bcm-sba-raid.c
@@ -98,9 +98,8 @@ enum sba_request_flags {
        SBA_REQUEST_STATE_ALLOCED       = 0x002,
        SBA_REQUEST_STATE_PENDING       = 0x004,
        SBA_REQUEST_STATE_ACTIVE        = 0x008,
-       SBA_REQUEST_STATE_RECEIVED      = 0x010,
-       SBA_REQUEST_STATE_COMPLETED     = 0x020,
-       SBA_REQUEST_STATE_ABORTED       = 0x040,
+       SBA_REQUEST_STATE_COMPLETED     = 0x010,
+       SBA_REQUEST_STATE_ABORTED       = 0x020,
        SBA_REQUEST_STATE_MASK          = 0x0ff,
        SBA_REQUEST_FENCE               = 0x100,
 };
@@ -160,7 +159,6 @@ struct sba_device {
        struct list_head reqs_alloc_list;
        struct list_head reqs_pending_list;
        struct list_head reqs_active_list;
-       struct list_head reqs_received_list;
        struct list_head reqs_completed_list;
        struct list_head reqs_aborted_list;
        struct list_head reqs_free_list;
@@ -307,18 +305,6 @@ static void _sba_complete_request(struct sba_device *sba,
                sba->reqs_fence = false;
 }
 
-/* Note: Must be called with sba->reqs_lock held */
-static void _sba_received_request(struct sba_device *sba,
-                                 struct sba_request *req)
-{
-       lockdep_assert_held(&sba->reqs_lock);
-       req->flags &= ~SBA_REQUEST_STATE_MASK;
-       req->flags |= SBA_REQUEST_STATE_RECEIVED;
-       list_move_tail(&req->node, &sba->reqs_received_list);
-       if (list_empty(&sba->reqs_active_list))
-               sba->reqs_fence = false;
-}
-
 static void sba_free_chained_requests(struct sba_request *req)
 {
        unsigned long flags;
@@ -360,10 +346,6 @@ static void sba_cleanup_nonpending_requests(struct sba_device *sba)
        list_for_each_entry_safe(req, req1, &sba->reqs_alloc_list, node)
                _sba_free_request(sba, req);
 
-       /* Freeup all received request */
-       list_for_each_entry_safe(req, req1, &sba->reqs_received_list, node)
-               _sba_free_request(sba, req);
-
        /* Freeup all completed request */
        list_for_each_entry_safe(req, req1, &sba->reqs_completed_list, node)
                _sba_free_request(sba, req);
@@ -482,9 +464,6 @@ static void sba_process_received_request(struct sba_device *sba,
                        _sba_free_request(sba, nreq);
                INIT_LIST_HEAD(&first->next);
 
-               /* Mark request as received */
-               _sba_received_request(sba, first);
-
                /* The client is allowed to attach dependent operations
                 * until 'ack' is set
                 */
@@ -1498,7 +1477,6 @@ static int sba_prealloc_channel_resources(struct sba_device *sba)
        INIT_LIST_HEAD(&sba->reqs_alloc_list);
        INIT_LIST_HEAD(&sba->reqs_pending_list);
        INIT_LIST_HEAD(&sba->reqs_active_list);
-       INIT_LIST_HEAD(&sba->reqs_received_list);
        INIT_LIST_HEAD(&sba->reqs_completed_list);
        INIT_LIST_HEAD(&sba->reqs_aborted_list);
        INIT_LIST_HEAD(&sba->reqs_free_list);