From: Michael S. Tsirkin mst@redhat.com
[ Upstream commit 1e3e792650d2c0df8dd796906275b7c79e278664 ]
The patch adding the iommu lock did not initialize it. The struct is zero-initialized so this is mostly a problem when using lockdep.
Reported-by: kernel test robot rong.a.chen@intel.com Cc: Max Gurtovoy maxg@mellanox.com Fixes: 0ea9ee430e74 ("vdpasim: protect concurrent access to iommu iotlb") Signed-off-by: Michael S. Tsirkin mst@redhat.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/vdpa/vdpa_sim/vdpa_sim.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/drivers/vdpa/vdpa_sim/vdpa_sim.c b/drivers/vdpa/vdpa_sim/vdpa_sim.c index 8ac6f341dcc16..412fa85ba3653 100644 --- a/drivers/vdpa/vdpa_sim/vdpa_sim.c +++ b/drivers/vdpa/vdpa_sim/vdpa_sim.c @@ -331,6 +331,7 @@ static struct vdpasim *vdpasim_create(void)
INIT_WORK(&vdpasim->work, vdpasim_work); spin_lock_init(&vdpasim->lock); + spin_lock_init(&vdpasim->iommu_lock);
dev = &vdpasim->vdpa.dev; dev->coherent_dma_mask = DMA_BIT_MASK(64);