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| author | Cathy Avery <cavery@redhat.com> | 2019-02-28 14:28:24 -0500 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2019-03-06 19:26:13 -0500 |
| commit | 2ff717cdc693d532e4560f43858443aea7d88197 (patch) | |
| tree | a7c8aa70cf06cebe2a2089c97dcb8a28c490c074 /drivers/target | |
| parent | 3722e6a52174d7c3a00e6f5efd006ca093f346c1 (diff) | |
| download | linux-2ff717cdc693d532e4560f43858443aea7d88197.tar.gz linux-2ff717cdc693d532e4560f43858443aea7d88197.tar.bz2 linux-2ff717cdc693d532e4560f43858443aea7d88197.zip | |
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 <cavery@redhat.com>
Acked-by: Mike Christie <mchristi@redhat.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/target')
| -rw-r--r-- | drivers/target/target_core_user.c | 11 |
1 files changed, 6 insertions, 5 deletions
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; } |