| Message ID | 20200327101934.31040-4-jwi@linux.ibm.com |
|---|---|
| State | Accepted |
| Delegated to: | David Miller |
| Headers | show |
| Series | s390/qeth: updates 2020-03-27 | expand |
diff --git a/drivers/s390/net/Kconfig b/drivers/s390/net/Kconfig index 36633387b952..3850a0f5f0bc 100644 --- a/drivers/s390/net/Kconfig +++ b/drivers/s390/net/Kconfig @@ -97,6 +97,7 @@ config QETH_OSN depends on QETH help This enables the qeth driver to support devices in OSN mode. + This feature will be removed in 2021. If unsure, choose N. config QETH_OSX diff --git a/drivers/s390/net/qeth_l2_main.c b/drivers/s390/net/qeth_l2_main.c index 974b4596b78d..0bd5b09e7a22 100644 --- a/drivers/s390/net/qeth_l2_main.c +++ b/drivers/s390/net/qeth_l2_main.c @@ -587,6 +587,9 @@ static int qeth_l2_probe_device(struct ccwgroup_device *gdev) struct qeth_card *card = dev_get_drvdata(&gdev->dev); int rc; + if (IS_OSN(card)) + dev_notice(&gdev->dev, "OSN support will be dropped in 2021\n"); + qeth_l2_vnicc_set_defaults(card); mutex_init(&card->sbp_lock);
OSN devices currently spend an awful long time in qeth_l2_set_online() until various unsupported HW cmds time out. This has been broken for over two years, ever since commit d22ffb5a712f ("s390/qeth: fix IPA command submission race") triggered a FW bug in cmd processing. Prior to commit 782e4a792147 ("s390/qeth: don't poll for cmd IO completion"), this wait for timeout would have even been spent busy-polling. The offending patch was picked up by stable and all relevant distros, and yet noone noticed. OSN setups only ever worked in combination with an out-of-tree blob, and the last machine that even offered HW with OSN support was released back in 2015. Rather than attempting to work-around this FW issue for no actual gain, add a deprecation warning so anyone who still wants to maintain this part of the code can speak up. Else rip it all out in 2021. Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com> --- drivers/s390/net/Kconfig | 1 + drivers/s390/net/qeth_l2_main.c | 3 +++ 2 files changed, 4 insertions(+)