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mctp: Avoid warning if unregister notifies twice 

Previously if an unregister notify handler ran twice (waiting for
netdev to be released) it would print a warning in mctp_unregister()
every subsequent time the unregister notify occured.

Instead we only need to worry about the case where a mctp_ptr is
set on an unknown device type.

Signed-off-by: Matt Johnston <matt@codeconstruct.com.au>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Matt Johnston 2022-02-25 13:39:36 +08:00 committed by Jakub Kicinski
parent 23d7433011
commit f62457df5c
1 changed files with 4 additions and 4 deletions
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8
net/mctp/device.c
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@ -428,10 +428,10 @@ static void mctp_unregister(struct net_device *dev)
struct mctp_dev *mdev;
mdev = mctp_dev_get_rtnl(dev);
if (mctp_known(dev) != (bool)mdev) {
if (mdev && !mctp_known(dev)) {
// Sanity check, should match what was set in mctp_register
netdev_warn(dev, "%s: mdev pointer %d but type (%d) match is %d",
__func__, (bool)mdev, mctp_known(dev), dev->type);
netdev_warn(dev, "%s: BUG mctp_ptr set for unknown type %d",
__func__, dev->type);
return;
}
if (!mdev)
@ -455,7 +455,7 @@ static int mctp_register(struct net_device *dev)
if (mdev) {
if (!mctp_known(dev))
netdev_warn(dev, "%s: mctp_dev set for unknown type %d",
netdev_warn(dev, "%s: BUG mctp_ptr set for unknown type %d",
__func__, dev->type);
return 0;
}