android_kernel_samsung_a7y1.../drivers/s390
Julian Wiedmann 581774cd20 s390/qdio: handle PENDING state for QEBSM devices
[ Upstream commit 04310324c6f482921c071444833e70fe861b73d9 ]

When a CQ-enabled device uses QEBSM for SBAL state inspection,
get_buf_states() can return the PENDING state for an Output Queue.
get_outbound_buffer_frontier() isn't prepared for this, and any PENDING
buffer will permanently stall all further completion processing on this
Queue.

This isn't a concern for non-QEBSM devices, as get_buf_states() for such
devices will manually turn PENDING buffers into EMPTY ones.

Fixes: 104ea556ee7f ("qdio: support asynchronous delivery of storage blocks")
Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-04-06 19:54:45 +02:00
..
block s390/dasd: Fix capacity calculation for large volumes 2020-04-06 16:43:31 +02:00
char s390/3270: fix lockdep false positive on view->lock 2020-04-06 16:43:33 +02:00
cio s390/qdio: handle PENDING state for QEBSM devices 2020-04-06 19:54:45 +02:00
crypto A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
net s390/qeth: fix VLAN attribute in bridge_hostnotify udev event 2020-04-06 19:16:38 +02:00
scsi scsi: zfcp: fix to prevent port_remove with pure auto scan LUNs (only sdevs) 2020-04-06 18:21:26 +02:00
virtio A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
Makefile A750FXXU4CTBC 2020-03-27 21:51:54 +05:30