linux-kernel - [PATCH] virtio-mmio: Use to_virtio_mmio

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Message-Id: <20210210030401.5532-1-tangbin@cmss.chinamobile.com>
Date:   Wed, 10 Feb 2021 11:04:01 +0800
From:   Tang Bin <tangbin@...s.chinamobile.com>
To:     mst@...hat.com, jasowang@...hat.com
Cc:     virtualization@...ts.linux-foundation.org,
        linux-kernel@...r.kernel.org,
        Tang Bin <tangbin@...s.chinamobile.com>
Subject: [PATCH] virtio-mmio: Use to_virtio_mmio_device() to simply code

The file virtio_mmio.c has defined the function to_virtio_mmio_device,
so use it instead of container_of() to simply code. And remove
superfluous blank lines in this file.

Signed-off-by: Tang Bin <tangbin@...s.chinamobile.com>
---
 drivers/virtio/virtio_mmio.c | 16 +---------------
 1 file changed, 1 insertion(+), 15 deletions(-)

diff --git a/drivers/virtio/virtio_mmio.c b/drivers/virtio/virtio_mmio.c
index 627ac0487..449d0f209 100644
--- a/drivers/virtio/virtio_mmio.c
+++ b/drivers/virtio/virtio_mmio.c
@@ -69,14 +69,10 @@
 #include <uapi/linux/virtio_mmio.h>
 #include <linux/virtio_ring.h>
 
-
-
 /* The alignment to use between consumer and producer parts of vring.
  * Currently hardcoded to the page size. */
 #define VIRTIO_MMIO_VRING_ALIGN		PAGE_SIZE
 
-
-
 #define to_virtio_mmio_device(_plat_dev) \
 	container_of(_plat_dev, struct virtio_mmio_device, vdev)
 
@@ -100,8 +96,6 @@ struct virtio_mmio_vq_info {
 	struct list_head node;
 };
 
-
-
 /* Configuration interface */
 
 static u64 vm_get_features(struct virtio_device *vdev)
@@ -264,8 +258,6 @@ static void vm_reset(struct virtio_device *vdev)
 	writel(0, vm_dev->base + VIRTIO_MMIO_STATUS);
 }
 
-
-
 /* Transport interface */
 
 /* the notify function used when creating a virt queue */
@@ -307,8 +299,6 @@ static irqreturn_t vm_interrupt(int irq, void *opaque)
 	return ret;
 }
 
-
-
 static void vm_del_vq(struct virtqueue *vq)
 {
 	struct virtio_mmio_device *vm_dev = to_virtio_mmio_device(vq->vdev);
@@ -512,13 +502,11 @@ static const struct virtio_config_ops virtio_mmio_config_ops = {
 	.bus_name	= vm_bus_name,
 };
 
-
 static void virtio_mmio_release_dev(struct device *_d)
 {
 	struct virtio_device *vdev =
 			container_of(_d, struct virtio_device, dev);
-	struct virtio_mmio_device *vm_dev =
-			container_of(vdev, struct virtio_mmio_device, vdev);
+	struct virtio_mmio_device *vm_dev = to_virtio_mmio_device(vdev);
 	struct platform_device *pdev = vm_dev->pdev;
 
 	devm_kfree(&pdev->dev, vm_dev);
@@ -608,8 +596,6 @@ static int virtio_mmio_remove(struct platform_device *pdev)
 	return 0;
 }
 
-
-
 /* Devices list parameter */
 
 #if defined(CONFIG_VIRTIO_MMIO_CMDLINE_DEVICES)
-- 
2.20.1.windows.1