On 02/28/2019 01:28 PM, Cathy Avery wrote: > genlmsg_multicast_allns now returns the correct statuses when a > message is sent to a listener. However in the case of adding a > device we want to wait for the listener otherwise we may miss the > the device during startup. > > Signed-off-by: Cathy Avery <cavery@xxxxxxxxxx> > --- > drivers/target/target_core_user.c | 11 ++++++----- > 1 file changed, 6 insertions(+), 5 deletions(-) > > diff --git a/drivers/target/target_core_user.c b/drivers/target/target_core_user.c > index 5831e0eecea1..2d3f8f5403d8 100644 > --- a/drivers/target/target_core_user.c > +++ b/drivers/target/target_core_user.c > @@ -1794,11 +1794,12 @@ static int tcmu_netlink_event_send(struct tcmu_dev *udev, > > ret = genlmsg_multicast_allns(&tcmu_genl_family, skb, 0, > TCMU_MCGRP_CONFIG, GFP_KERNEL); > - /* We don't care if no one is listening */ > - if (ret == -ESRCH) > - ret = 0; > - if (!ret) > - ret = tcmu_wait_genl_cmd_reply(udev); > + > + /* Wait during an add as the listener may not be up yet */ > + if (ret == 0 || > + (ret == -ESRCH && cmd == TCMU_CMD_ADDED_DEVICE)) > + return tcmu_wait_genl_cmd_reply(udev); > + > return ret; > } Looks ok to me. Acked-by: Mike Christie <mchristi@xxxxxxxxxx>
