[PATCH 1/2] vdpa_sim: clear pending_kick on device reset

[Xiong Weimin]

From: Xiong Weimin <xiongweimin@xxxxxxxxxx>

vdpasim_kick_vq() sets pending_kick when a virtqueue is kicked while
the device is suspended (!running but DRIVER_OK).  vdpasim_resume()
later replays kicks for all virtqueues when pending_kick is set.

vdpasim_do_reset() clears running and status but leaves pending_kick
unchanged.  If a kick is deferred during suspend and the device is
reset before resume, a later resume can spuriously kick every
virtqueue even though no new work was queued after reset.

Clear pending_kick in vdpasim_do_reset() together with the other
device state that must not survive a reset.

Tested-on: openEuler VM (6.16.8, /usr/src/linux-6.16.8)
Tested-by: Xiong Weimin <xiongweimin@xxxxxxxxxx>

Signed-off-by: Xiong Weimin <xiongweimin@xxxxxxxxxx>
---
 drivers/vdpa/vdpa_sim/vdpa_sim.c | 1 +
 1 file changed, 1 insertion(+)

--- a/drivers/vdpa/vdpa_sim/vdpa_sim.c
+++ b/drivers/vdpa/vdpa_sim/vdpa_sim.c
@@ -161,6 +161,7 @@ static void vdpasim_do_reset(struct vdpasim *vdpasim, u32 flags)
 	}
 
 	vdpasim->running = false;
+	vdpasim->pending_kick = false;
 	spin_unlock(&vdpasim->iommu_lock);
 
 	vdpasim->features = 0;
-- 
2.43.0