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Subject[PATCH 5.4 034/203] s390/qeth: fix false reporting of VNIC CHAR config failure
From: Alexandra Winter <>

commit 68c57bfd52836e31bff33e5e1fc64029749d2c35 upstream.

Symptom: Error message "Configuring the VNIC characteristics failed"
in dmesg whenever an OSA interface on z15 is set online.

The VNIC characteristics get re-programmed when setting a L2 device
online. This follows the selected 'wanted' characteristics - with the
exception that the INVISIBLE characteristic unconditionally gets
switched off.

For devices that don't support INVISIBLE (ie. OSA), the resulting
IO failure raises a noisy error message
("Configuring the VNIC characteristics failed").
For IQD, INVISIBLE is off by default anyways.

So don't unnecessarily special-case the INVISIBLE characteristic, and
thereby suppress the misleading error message on OSA devices.

Fixes: caa1f0b10d18 ("s390/qeth: add VNICC enable/disable support")
Signed-off-by: Alexandra Winter <>
Reviewed-by: Julian Wiedmann <>
Signed-off-by: Julian Wiedmann <>
Signed-off-by: David S. Miller <>
Signed-off-by: Greg Kroah-Hartman <>

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

--- a/drivers/s390/net/qeth_l2_main.c
+++ b/drivers/s390/net/qeth_l2_main.c
@@ -2072,7 +2072,6 @@ static void qeth_l2_vnicc_init(struct qe
error |= qeth_l2_vnicc_recover_timeout(card, QETH_VNICC_LEARNING,
chars_tmp = card->options.vnicc.wanted_chars ^ QETH_VNICC_DEFAULT;
chars_len = sizeof(card->options.vnicc.wanted_chars) * BITS_PER_BYTE;
for_each_set_bit(i, &chars_tmp, chars_len) {
vnicc = BIT(i);

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