[PATCH 06/18] dmaengine: idxd: move wq_disable() to device.c

[Dave Jiang <dave.jiang@xxxxxxxxx>]

Move the wq_disable() function to device.c in preparation of setting up the
idxd internal sub-driver framework. No logic changes.

Reviewed-by: Dan Williams <dan.j.williams@xxxxxxxxx>
Signed-off-by: Dave Jiang <dave.jiang@xxxxxxxxx>
---
 drivers/dma/idxd/device.c |   37 +++++++++++++++++++++++++++++++++++++
 drivers/dma/idxd/idxd.h   |    1 +
 drivers/dma/idxd/sysfs.c  |   38 +-------------------------------------
 3 files changed, 39 insertions(+), 37 deletions(-)

diff --git a/drivers/dma/idxd/device.c b/drivers/dma/idxd/device.c
index 0f214078f8c6..f146a4fb772f 100644
--- a/drivers/dma/idxd/device.c
+++ b/drivers/dma/idxd/device.c
@@ -1210,3 +1210,40 @@ int drv_enable_wq(struct idxd_wq *wq)
 	mutex_unlock(&wq->wq_lock);
 	return rc;
 }
+
+static void __drv_disable_wq(struct idxd_wq *wq)
+{
+	struct idxd_device *idxd = wq->idxd;
+	struct device *dev = &idxd->pdev->dev;
+
+	lockdep_assert_held(&wq->wq_lock);
+
+	if (wq->type == IDXD_WQT_KERNEL)
+		idxd_wq_quiesce(wq);
+
+	if (is_idxd_wq_dmaengine(wq))
+		idxd_unregister_dma_channel(wq);
+	else if (is_idxd_wq_cdev(wq))
+		idxd_wq_del_cdev(wq);
+
+	if (idxd_wq_refcount(wq))
+		dev_warn(dev, "Clients has claim on wq %d: %d\n",
+			 wq->id, idxd_wq_refcount(wq));
+
+	idxd_wq_unmap_portal(wq);
+
+	idxd_wq_drain(wq);
+	idxd_wq_reset(wq);
+
+	idxd_wq_free_resources(wq);
+	wq->client_count = 0;
+
+	dev_info(dev, "wq %s disabled\n", dev_name(wq_confdev(wq)));
+}
+
+void drv_disable_wq(struct idxd_wq *wq)
+{
+	mutex_lock(&wq->wq_lock);
+	__drv_disable_wq(wq);
+	mutex_unlock(&wq->wq_lock);
+}
diff --git a/drivers/dma/idxd/idxd.h b/drivers/dma/idxd/idxd.h
index ba1ff968c50d..0b0f9361c2eb 100644
--- a/drivers/dma/idxd/idxd.h
+++ b/drivers/dma/idxd/idxd.h
@@ -490,6 +490,7 @@ void idxd_unmask_msix_vector(struct idxd_device *idxd, int vec_id);
 
 /* device control */
 int drv_enable_wq(struct idxd_wq *wq);
+void drv_disable_wq(struct idxd_wq *wq);
 int idxd_device_init_reset(struct idxd_device *idxd);
 int idxd_device_enable(struct idxd_device *idxd);
 int idxd_device_disable(struct idxd_device *idxd);
diff --git a/drivers/dma/idxd/sysfs.c b/drivers/dma/idxd/sysfs.c
index f4f7e8870436..ac0997b4c72a 100644
--- a/drivers/dma/idxd/sysfs.c
+++ b/drivers/dma/idxd/sysfs.c
@@ -89,42 +89,6 @@ static int idxd_config_bus_probe(struct device *dev)
 	return -ENODEV;
 }
 
-static void disable_wq(struct idxd_wq *wq)
-{
-	struct idxd_device *idxd = wq->idxd;
-	struct device *dev = &idxd->pdev->dev;
-
-	mutex_lock(&wq->wq_lock);
-	dev_dbg(dev, "%s removing WQ %s\n", __func__, dev_name(wq_confdev(wq)));
-	if (wq->state == IDXD_WQ_DISABLED) {
-		mutex_unlock(&wq->wq_lock);
-		return;
-	}
-
-	if (wq->type == IDXD_WQT_KERNEL)
-		idxd_wq_quiesce(wq);
-
-	if (is_idxd_wq_dmaengine(wq))
-		idxd_unregister_dma_channel(wq);
-	else if (is_idxd_wq_cdev(wq))
-		idxd_wq_del_cdev(wq);
-
-	if (idxd_wq_refcount(wq))
-		dev_warn(dev, "Clients has claim on wq %d: %d\n",
-			 wq->id, idxd_wq_refcount(wq));
-
-	idxd_wq_unmap_portal(wq);
-
-	idxd_wq_drain(wq);
-	idxd_wq_reset(wq);
-
-	idxd_wq_free_resources(wq);
-	wq->client_count = 0;
-	mutex_unlock(&wq->wq_lock);
-
-	dev_info(dev, "wq %s disabled\n", dev_name(wq_confdev(wq)));
-}
-
 static int idxd_config_bus_remove(struct device *dev)
 {
 	int rc;
@@ -135,7 +99,7 @@ static int idxd_config_bus_remove(struct device *dev)
 	if (is_idxd_wq_dev(dev)) {
 		struct idxd_wq *wq = confdev_to_wq(dev);
 
-		disable_wq(wq);
+		drv_disable_wq(wq);
 	} else if (is_idxd_dev(dev)) {
 		struct idxd_device *idxd = confdev_to_idxd(dev);
 		int i;