diff options
| author | Leon Romanovsky <leonro@nvidia.com> | 2021-11-17 16:49:09 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2021-11-18 11:34:17 +0000 |
| commit | fec1faf221f61118aa52f44c65a13c3e173a64c2 (patch) | |
| tree | bac3b1ae7e385ead0533ebd36e1e87d810f77aff /net | |
| parent | f915b75bffb7257bd8d26376b8e1cc67771927f8 (diff) | |
| download | lwn-fec1faf221f61118aa52f44c65a13c3e173a64c2.tar.gz lwn-fec1faf221f61118aa52f44c65a13c3e173a64c2.zip | |
devlink: Don't throw an error if flash notification sent before devlink visible
The mlxsw driver calls to various devlink flash routines even before
users can get any access to the devlink instance itself. For example,
mlxsw_core_fw_rev_validate() one of such functions.
__mlxsw_core_bus_device_register
-> mlxsw_core_fw_rev_validate
-> mlxsw_core_fw_flash
-> mlxfw_firmware_flash
-> mlxfw_status_notify
-> devlink_flash_update_status_notify
-> __devlink_flash_update_notify
-> WARN_ON(...)
It causes to the WARN_ON to trigger warning about devlink not registered.
Fixes: cf530217408e ("devlink: Notify users when objects are accessible")
Reported-by: Danielle Ratson <danieller@nvidia.com>
Tested-by: Danielle Ratson <danieller@nvidia.com>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Acked-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
| -rw-r--r-- | net/core/devlink.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/net/core/devlink.c b/net/core/devlink.c index 5ba4f9434acd..5ad72dbfcd07 100644 --- a/net/core/devlink.c +++ b/net/core/devlink.c @@ -4229,7 +4229,9 @@ static void __devlink_flash_update_notify(struct devlink *devlink, WARN_ON(cmd != DEVLINK_CMD_FLASH_UPDATE && cmd != DEVLINK_CMD_FLASH_UPDATE_END && cmd != DEVLINK_CMD_FLASH_UPDATE_STATUS); - WARN_ON(!xa_get_mark(&devlinks, devlink->index, DEVLINK_REGISTERED)); + + if (!xa_get_mark(&devlinks, devlink->index, DEVLINK_REGISTERED)) + return; msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); if (!msg) |