linux_dsm_epyc7002/drivers/s390
Julian Wiedmann f91a299fb1 s390/qeth: fix notification for pending buffers during teardown
[ Upstream commit 7eefda7f353ef86ad82a2dc8329e8a3538c08ab6 ]

The cited commit reworked the state machine for pending TX buffers.
In qeth_iqd_tx_complete() it turned PENDING into a transient state, and
uses NEED_QAOB for buffers that get parked while waiting for their QAOB
completion.

But it missed to adjust the check in qeth_tx_complete_buf(). So if
qeth_tx_complete_pending_bufs() is called during teardown to drain
the parked TX buffers, we no longer raise a notification for af_iucv.

Instead of updating the checked state, just move this code into
qeth_tx_complete_pending_bufs() itself. This also gets rid of the
special-case in the common TX completion path.

Fixes: 8908f36d20 ("s390/qeth: fix af_iucv notification race")
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>
2021-03-17 17:06:21 +01:00
..
block s390/dasd: fix list corruption of lcu list 2020-12-30 11:54:09 +01:00
char s390 updates for the 5.10 merge window 2020-10-16 12:36:38 -07:00
cio s390/cio: return -EFAULT if copy_to_user() fails 2021-03-17 17:06:19 +01:00
crypto s390/crypto: return -EFAULT if copy_to_user() fails 2021-03-17 17:06:19 +01:00
net s390/qeth: fix notification for pending buffers during teardown 2021-03-17 17:06:21 +01:00
scsi s390 updates for the 5.10 merge window 2020-10-16 12:36:38 -07:00
virtio virtio/s390: implement virtio-ccw revision 2 correctly 2021-03-04 11:38:42 +01:00
Makefile s390: remove pointless drivers-y in drivers/s390/Makefile 2019-09-16 13:21:51 +02:00