accel/qaic: Remove bo->queued field

->queued field is used to track whether the BO is submitted to hardware for
DMA or not. Since same information can be retrieved using ->xfer_list field
of same structure remove ->queued as it is redundant.
Signed-off-by: Pranjal Ramajor Asha Kanojiya <quic_pkanojiy@quicinc.com>
Reviewed-by: Jeffrey Hugo <quic_jhugo@quicinc.com>
Signed-off-by: Jeffrey Hugo <quic_jhugo@quicinc.com>
Reviewed-by: Jacek Lawrynowicz <jacek.lawrynowicz@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20231208163457.1295993-3-quic_jhugo@quicinc.com

drivers/accel/qaic/qaic.h

@@ -191,8 +191,6 @@ struct qaic_bo {
 	u32			nr_slice;
 	/* Number of slice that have been transferred by DMA engine */
 	u32			nr_slice_xfer_done;
-	/* true = BO is queued for execution, true = BO is not queued */
-	bool			queued;
 	/*
 	 * If true then user has attached slicing information to this BO by
 	 * calling DRM_IOCTL_QAIC_ATTACH_SLICE_BO ioctl.

drivers/accel/qaic/qaic_data.c

@@ -141,6 +141,11 @@ struct dbc_rsp {
 	__le16	status;
 } __packed;
 
+static inline bool bo_queued(struct qaic_bo *bo)
+{
+	return !list_empty(&bo->xfer_list);
+}
+
 inline int get_dbc_req_elem_size(void)
 {
 	return sizeof(struct dbc_req);
@@ -648,6 +653,7 @@ static void qaic_init_bo(struct qaic_bo *bo, bool reinit)
 	}
 	complete_all(&bo->xfer_done);
 	INIT_LIST_HEAD(&bo->slices);
+	INIT_LIST_HEAD(&bo->xfer_list);
 }
 
 static struct qaic_bo *qaic_alloc_init_bo(void)
@@ -1166,7 +1172,6 @@ static int send_bo_list_to_device(struct qaic_device *qdev, struct drm_file *fil
 	struct bo_slice *slice;
 	unsigned long flags;
 	struct qaic_bo *bo;
-	bool queued;
 	int i, j;
 	int ret;
 
@@ -1198,9 +1203,7 @@ static int send_bo_list_to_device(struct qaic_device *qdev, struct drm_file *fil
 		}
 
 		spin_lock_irqsave(&dbc->xfer_lock, flags);
-		queued = bo->queued;
-		bo->queued = true;
-		if (queued) {
+		if (bo_queued(bo)) {
 			spin_unlock_irqrestore(&dbc->xfer_lock, flags);
 			ret = -EINVAL;
 			goto unlock_bo;
@@ -1223,7 +1226,6 @@ static int send_bo_list_to_device(struct qaic_device *qdev, struct drm_file *fil
 			else
 				ret = copy_exec_reqs(qdev, slice, dbc->id, head, tail);
 			if (ret) {
-				bo->queued = false;
 				spin_unlock_irqrestore(&dbc->xfer_lock, flags);
 				goto unlock_bo;
 			}
@@ -1246,8 +1248,7 @@ static int send_bo_list_to_device(struct qaic_device *qdev, struct drm_file *fil
 		spin_lock_irqsave(&dbc->xfer_lock, flags);
 		bo = list_last_entry(&dbc->xfer_list, struct qaic_bo, xfer_list);
 		obj = &bo->base;
-		bo->queued = false;
-		list_del(&bo->xfer_list);
+		list_del_init(&bo->xfer_list);
 		spin_unlock_irqrestore(&dbc->xfer_lock, flags);
 		dma_sync_sgtable_for_cpu(&qdev->pdev->dev, bo->sgt, bo->dir);
 		drm_gem_object_put(obj);
@@ -1608,8 +1609,7 @@ irqreturn_t dbc_irq_threaded_fn(int irq, void *data)
 			 */
 			dma_sync_sgtable_for_cpu(&qdev->pdev->dev, bo->sgt, bo->dir);
 			bo->nr_slice_xfer_done = 0;
-			bo->queued = false;
-			list_del(&bo->xfer_list);
+			list_del_init(&bo->xfer_list);
 			bo->perf_stats.req_processed_ts = ktime_get_ns();
 			complete_all(&bo->xfer_done);
 			drm_gem_object_put(&bo->base);
@@ -1868,7 +1868,7 @@ int qaic_detach_slice_bo_ioctl(struct drm_device *dev, void *data, struct drm_fi
 
 	/* Check if BO is committed to H/W for DMA */
 	spin_lock_irqsave(&dbc->xfer_lock, flags);
-	if (bo->queued) {
+	if (bo_queued(bo)) {
 		spin_unlock_irqrestore(&dbc->xfer_lock, flags);
 		ret = -EBUSY;
 		goto unlock_ch_srcu;
@@ -1898,8 +1898,7 @@ static void empty_xfer_list(struct qaic_device *qdev, struct dma_bridge_chan *db
 	spin_lock_irqsave(&dbc->xfer_lock, flags);
 	while (!list_empty(&dbc->xfer_list)) {
 		bo = list_first_entry(&dbc->xfer_list, typeof(*bo), xfer_list);
-		bo->queued = false;
-		list_del(&bo->xfer_list);
+		list_del_init(&bo->xfer_list);
 		spin_unlock_irqrestore(&dbc->xfer_lock, flags);
 		bo->nr_slice_xfer_done = 0;
 		bo->req_id = 0;