From: weiping zhang <zhangweiping@didichuxing.com>
Date: Wed, 6 Dec 2017 13:59:32 +0000 (+0800)
Subject: virtio_mmio: add cleanup for virtio_mmio_remove
X-Git-Tag: v4.15-rc3~13^2~1
X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=25f32223bce5c580e0392a176319a587d7a17e95;p=linux.git

virtio_mmio: add cleanup for virtio_mmio_remove

cleanup all resource allocated by virtio_mmio_probe.

Signed-off-by: weiping zhang <zhangweiping@didichuxing.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
---

diff --git a/drivers/virtio/virtio_mmio.c b/drivers/virtio/virtio_mmio.c
index ec401042a5d1..a9192fe4f345 100644
--- a/drivers/virtio/virtio_mmio.c
+++ b/drivers/virtio/virtio_mmio.c
@@ -610,7 +610,13 @@ static int virtio_mmio_probe(struct platform_device *pdev)
 static int virtio_mmio_remove(struct platform_device *pdev)
 {
 	struct virtio_mmio_device *vm_dev = platform_get_drvdata(pdev);
+	struct resource *mem;
 
+	iounmap(vm_dev->base);
+	mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	if (mem)
+		devm_release_mem_region(&pdev->dev, mem->start,
+			resource_size(mem));
 	unregister_virtio_device(&vm_dev->vdev);
 
 	return 0;