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authorBenjamin Berg <benjamin.berg@intel.com>2023-02-09 12:00:04 +0300
committerRichard Weinberger <richard@nod.at>2023-02-13 12:14:32 +0300
commitabdeb4fa5e1b5b4918034f02236fd886f40c20c1 (patch)
treeaaed7e9ac00c63ba0c5a94568e459892cf566459 /arch/um
parent8e9cd85139a2149d5a7c121b05e0cdb8287311f9 (diff)
downloadlinux-abdeb4fa5e1b5b4918034f02236fd886f40c20c1.tar.xz
um: virtio_uml: move device breaking into workqueue
We should not be calling virtio_break_device from an IRQ context. Move breaking the device into the workqueue so that it is done from a reasonable context. Fixes: af9fb41ed315 ("um: virtio_uml: Fix broken device handling in time-travel") Signed-off-by: Benjamin Berg <benjamin.berg@intel.com> Signed-off-by: Richard Weinberger <richard@nod.at>
Diffstat (limited to 'arch/um')
-rw-r--r--arch/um/drivers/virtio_uml.c16
1 files changed, 15 insertions, 1 deletions
diff --git a/arch/um/drivers/virtio_uml.c b/arch/um/drivers/virtio_uml.c
index ecfaae7096e8..8adca2000e51 100644
--- a/arch/um/drivers/virtio_uml.c
+++ b/arch/um/drivers/virtio_uml.c
@@ -170,7 +170,6 @@ static void vhost_user_check_reset(struct virtio_uml_device *vu_dev,
vu_dev->registered = 0;
- virtio_break_device(&vu_dev->vdev);
schedule_work(&pdata->conn_broken_wk);
}
@@ -1138,6 +1137,15 @@ void virtio_uml_set_no_vq_suspend(struct virtio_device *vdev,
static void vu_of_conn_broken(struct work_struct *wk)
{
+ struct virtio_uml_platform_data *pdata;
+ struct virtio_uml_device *vu_dev;
+
+ pdata = container_of(wk, struct virtio_uml_platform_data, conn_broken_wk);
+
+ vu_dev = platform_get_drvdata(pdata->pdev);
+
+ virtio_break_device(&vu_dev->vdev);
+
/*
* We can't remove the device from the devicetree so the only thing we
* can do is warn.
@@ -1268,8 +1276,14 @@ static int vu_unregister_cmdline_device(struct device *dev, void *data)
static void vu_conn_broken(struct work_struct *wk)
{
struct virtio_uml_platform_data *pdata;
+ struct virtio_uml_device *vu_dev;
pdata = container_of(wk, struct virtio_uml_platform_data, conn_broken_wk);
+
+ vu_dev = platform_get_drvdata(pdata->pdev);
+
+ virtio_break_device(&vu_dev->vdev);
+
vu_unregister_cmdline_device(&pdata->pdev->dev, NULL);
}