[SRU][B][E][F][PATCH 0/2] Fix misleading error message: Configuring the VNIC characteristics failed (LP: 1860523)

[frank.heimes at canonical.com]

Buglink: https://bugs.launchpad.net/bugs/1860523

SRU Justification:

[Impact]

* For devices that don't support the 'INVISIBLE' characteristic (ie. OSA), the resulting IO failure raises the noisy error message "Configuring the VNIC characteristics failed"

* The INVISIBLE characteristic unconditionally gets switched off, which is reverted with this patch.

* For Internal Queued Direct communication (IQD) 'INVISIBLE' is off by default.

* Hence the INVISIBLE characteristic case is unnecessary.

[Fix]

* 68c57bfd52836e31bff33e5e1fc64029749d2c35 68c57bf "s390/qeth: fix false reporting of VNIC CHAR config failure"

* Upstream accepted with v5.5-rc5, but backport for 4.19-stable and 5.4-stable here: https://git.kernel.org/pub/scm/linux/kernel/git/stable/stable-queue.git

[Test Case]

* Configure an IBM z15 for LinuxONE III machine with at least one OSA adapter.

* Check dmsg for message "Configuring the VNIC characteristics failed" while setting an OSA device online.

[Regression Potential]

* The regression potential is low, since the patch is limited to a single line

* again linited to the s390x architecture and once again limited to the qeth network driver

* and on z15 hardware only.

[Other Info]

* This bug was identified at IBM while testing and is now rolled out to several different kernels.

* Once the patch got applied to the Ubuntu kernel(s) and a verification is required,

* this needs to be done by IBM, since Canonical doesn't have the needed machine generation.

Alexandra Winter (1):
  s390/qeth: fix false reporting of VNIC CHAR config failure

 drivers/s390/net/qeth_l2_main.c | 1 -
 1 file changed, 1 deletion(-)

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2.7.4