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Julian Wiedmann ebaf6c4a1e s390/qeth: invoke softirqs after napi_schedule()

[ Upstream commit 4d19db777a ]

Calling napi_schedule() from process context does not ensure that the
NET_RX softirq is run in a timely fashion. So trigger it manually.

This is no big issue with current code. A call to ndo_open() is usually
followed by a ndo_set_rx_mode() call, and for qeth this contains a
spin_unlock_bh(). Except for OSN, where qeth_l2_set_rx_mode() bails out
early.
Nevertheless it's best to not depend on this behaviour, and just fix
the issue at its source like all other drivers do. For instance see
commit 83a0c6e589 ("i40e: Invoke softirqs after napi_reschedule").

Fixes: a1c3ed4c9c ("qeth: NAPI support for l2 and l3 discipline")
Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>

2019-11-25 09:52:25 +01:00

block

s390/dasd: fix endless loop after read unit address configuration

2019-08-06 18:29:41 +02:00

char

s390/3270: fix lockdep false positive on view->lock

2019-05-16 19:43:41 +02:00

cio

s390/cio: exclude subchannels with no parent from pseudo check

2019-10-17 13:42:03 -07:00

crypto

s390/zcrypt: Introduce CEX6 toleration