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-rw-r--r--drivers/vfio/platform/vfio_platform_common.c15
-rw-r--r--drivers/vfio/platform/vfio_platform_private.h1
2 files changed, 14 insertions, 2 deletions
diff --git a/drivers/vfio/platform/vfio_platform_common.c b/drivers/vfio/platform/vfio_platform_common.c
index 611597e65f44..63935811cbd9 100644
--- a/drivers/vfio/platform/vfio_platform_common.c
+++ b/drivers/vfio/platform/vfio_platform_common.c
@@ -103,6 +103,8 @@ static void vfio_platform_release(void *device_data)
mutex_lock(&driver_lock);
if (!(--vdev->refcnt)) {
+ if (vdev->reset)
+ vdev->reset(vdev);
vfio_platform_regions_cleanup(vdev);
vfio_platform_irq_cleanup(vdev);
}
@@ -130,6 +132,9 @@ static int vfio_platform_open(void *device_data)
ret = vfio_platform_irq_init(vdev);
if (ret)
goto err_irq;
+
+ if (vdev->reset)
+ vdev->reset(vdev);
}
vdev->refcnt++;
@@ -162,6 +167,8 @@ static long vfio_platform_ioctl(void *device_data,
if (info.argsz < minsz)
return -EINVAL;
+ if (vdev->reset)
+ vdev->flags |= VFIO_DEVICE_FLAGS_RESET;
info.flags = vdev->flags;
info.num_regions = vdev->num_regions;
info.num_irqs = vdev->num_irqs;
@@ -255,8 +262,12 @@ static long vfio_platform_ioctl(void *device_data,
return ret;
- } else if (cmd == VFIO_DEVICE_RESET)
- return -EINVAL;
+ } else if (cmd == VFIO_DEVICE_RESET) {
+ if (vdev->reset)
+ return vdev->reset(vdev);
+ else
+ return -EINVAL;
+ }
return -ENOTTY;
}
diff --git a/drivers/vfio/platform/vfio_platform_private.h b/drivers/vfio/platform/vfio_platform_private.h
index 9e37b9fda483..1c9b3d59543c 100644
--- a/drivers/vfio/platform/vfio_platform_private.h
+++ b/drivers/vfio/platform/vfio_platform_private.h
@@ -67,6 +67,7 @@ struct vfio_platform_device {
struct resource*
(*get_resource)(struct vfio_platform_device *vdev, int i);
int (*get_irq)(struct vfio_platform_device *vdev, int i);
+ int (*reset)(struct vfio_platform_device *vdev);
};
struct vfio_platform_reset_combo {