From 2ff717cdc693d532e4560f43858443aea7d88197 Mon Sep 17 00:00:00 2001 From: Cathy Avery Date: Thu, 28 Feb 2019 14:28:24 -0500 Subject: scsi: target: tcmu: wait for nl reply only if there are listeners or during an add 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 Acked-by: Mike Christie Signed-off-by: Martin K. Petersen --- drivers/target/target_core_user.c | 11 ++++++----- 1 file changed, 6 insertions(+), 5 deletions(-) (limited to 'drivers/target') diff --git a/drivers/target/target_core_user.c b/drivers/target/target_core_user.c index 1e6d24943565..396c2fa1ec22 100644 --- a/drivers/target/target_core_user.c +++ b/drivers/target/target_core_user.c @@ -1764,11 +1764,12 @@ 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; } -- cgit