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| author | Stefan Haberland <stefan.haberland@de.ibm.com> | 2015-12-15 12:16:43 +0300 |
|---|---|---|
| committer | Ben Hutchings <ben@decadent.org.uk> | 2016-04-01 03:54:32 +0300 |
| commit | 809216deaa2c3e3212a1f3d07cf1f102569fa698 (patch) | |
| tree | 94aedf3568396ed3e220fafa9a7af3edb2f00002 /drivers/s390 | |
| parent | 751a5cf7c9ab11b54c97fdee372b5d57aba66224 (diff) | |
| download | linux-809216deaa2c3e3212a1f3d07cf1f102569fa698.tar.xz | |
s390/dasd: prevent incorrect length error under z/VM after PAV changes
commit 020bf042e5b397479c1174081b935d0ff15d1a64 upstream.
The channel checks the specified length and the provided amount of
data for CCWs and provides an incorrect length error if the size does
not match. Under z/VM with simulation activated the length may get
changed. Having the suppress length indication bit set is stated as
good CCW coding practice and avoids errors under z/VM.
Signed-off-by: Stefan Haberland <stefan.haberland@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Diffstat (limited to 'drivers/s390')
| -rw-r--r-- | drivers/s390/block/dasd_alias.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/s390/block/dasd_alias.c b/drivers/s390/block/dasd_alias.c index c388eda1e2b1..ed9c9808dbfa 100644 --- a/drivers/s390/block/dasd_alias.c +++ b/drivers/s390/block/dasd_alias.c @@ -749,7 +749,7 @@ static int reset_summary_unit_check(struct alias_lcu *lcu, ASCEBC((char *) &cqr->magic, 4); ccw = cqr->cpaddr; ccw->cmd_code = DASD_ECKD_CCW_RSCK; - ccw->flags = 0 ; + ccw->flags = CCW_FLAG_SLI; ccw->count = 16; ccw->cda = (__u32)(addr_t) cqr->data; ((char *)cqr->data)[0] = reason; |