s390/ism: Do not unregister clients with registered DMBs

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[ Upstream commit 266deeea34 ]

When ism_unregister_client() is called but the client still has DMBs
registered it returns -EBUSY and prints an error. This only happens
after the client has already been unregistered however. This is
unexpected as the unregister claims to have failed. Furthermore as this
implies a client bug a WARN() is more appropriate. Thus move the
deregistration after the check and use WARN().

Fixes: 89e7d2ba61 ("net/ism: Add new API for client registration")
Signed-off-by: Niklas Schnelle <schnelle@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Niklas Schnelle 2023-07-07 12:56:22 +02:00 • committed by Greg Kroah-Hartman

parent fdeb916f17

commit dd8ec9922c

1 changed files with 13 additions and 10 deletions

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drivers/s390/net/ism_drv.c

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