4.15-stable review patch. If anyone has any objections, please let me know.
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From: Julian Wiedmann jwi@linux.vnet.ibm.com
[ Upstream commit 4964c66fd49b2e2342da35358f2ff74614bcbaee ]
This reverts commit cb816192d986f7596009dedcf2201fe2e5bc2aa7.
The issue this attempted to fix never actually occurs. l3_add_rxip() checks (via l3_ip_from_hash()) if the requested address was previously added to the card. If so, it returns -EEXIST and doesn't call l3_add_ip(). As a result, the "address exists" path in l3_add_ip() is never taken for rxip addresses, and this patch had no effect.
Fixes: cb816192d986 ("s390/qeth: fix using of ref counter for rxip addresses") Signed-off-by: Julian Wiedmann jwi@linux.vnet.ibm.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/s390/net/qeth_l3_main.c | 8 +++----- 1 file changed, 3 insertions(+), 5 deletions(-)
--- a/drivers/s390/net/qeth_l3_main.c +++ b/drivers/s390/net/qeth_l3_main.c @@ -250,8 +250,7 @@ int qeth_l3_delete_ip(struct qeth_card * return -ENOENT;
addr->ref_counter--; - if (addr->ref_counter > 0 && (addr->type == QETH_IP_TYPE_NORMAL || - addr->type == QETH_IP_TYPE_RXIP)) + if (addr->type == QETH_IP_TYPE_NORMAL && addr->ref_counter > 0) return rc; if (addr->in_progress) return -EINPROGRESS; @@ -329,9 +328,8 @@ int qeth_l3_add_ip(struct qeth_card *car kfree(addr); } } else { - if (addr->type == QETH_IP_TYPE_NORMAL || - addr->type == QETH_IP_TYPE_RXIP) - addr->ref_counter++; + if (addr->type == QETH_IP_TYPE_NORMAL) + addr->ref_counter++; }
return rc;