diff options
Diffstat (limited to 'net/core/devmem.c')
| -rw-r--r-- | net/core/devmem.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/net/core/devmem.c b/net/core/devmem.c index 88065e5ef651..0dba26baae18 100644 --- a/net/core/devmem.c +++ b/net/core/devmem.c @@ -204,6 +204,8 @@ net_devmem_bind_dmabuf(struct net_device *dev, refcount_set(&binding->ref, 1); + mutex_init(&binding->lock); + binding->dmabuf = dmabuf; binding->attachment = dma_buf_attach(binding->dmabuf, dev->dev.parent); @@ -470,6 +472,11 @@ static void mp_dmabuf_devmem_uninstall(void *mp_priv, xa_for_each(&binding->bound_rxqs, xa_idx, bound_rxq) { if (bound_rxq == rxq) { xa_erase(&binding->bound_rxqs, xa_idx); + if (xa_empty(&binding->bound_rxqs)) { + mutex_lock(&binding->lock); + binding->dev = NULL; + mutex_unlock(&binding->lock); + } break; } } |