diff options
| author |   Stefan Weinhuber <wein@de.ibm.com> | 2010-03-24 11:49:53 +0100 |
|---|---|---|
| committer |   Martin Schwidefsky <sky@mschwide.boeblingen.de.ibm.com> | 2010-03-24 11:49:53 +0100 |
| commit | 4a31ba57cae853ce1ac00a22c0f5d80bd36685ed (patch) | |
| tree | c604002362185f60f02b4ad364e23030e15b8f26 /drivers/s390/block/dasd_3990_erp.c | |
| parent | [S390] system.h: Fix compile error for 1 and 2 byte cmpxchg (diff) | |
| download | linux-dev-4a31ba57cae853ce1ac00a22c0f5d80bd36685ed.tar.xz linux-dev-4a31ba57cae853ce1ac00a22c0f5d80bd36685ed.zip | |
[S390] dasd: fix alignment of transport mode recovery TCW
All TCWs need to be aligned on a 64 byte boundary or the I/O will be
rejected. For recovery requests we create fresh TCWs, so we need to
do the proper alignment here as well.
Signed-off-by: Stefan Weinhuber <wein@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'drivers/s390/block/dasd_3990_erp.c')
| -rw-r--r-- | drivers/s390/block/dasd_3990_erp.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/s390/block/dasd_3990_erp.c b/drivers/s390/block/dasd_3990_erp.c index 51224f76b980..b3736b8aad39 100644 --- a/drivers/s390/block/dasd_3990_erp.c +++ b/drivers/s390/block/dasd_3990_erp.c @@ -2287,7 +2287,8 @@ static struct dasd_ccw_req *dasd_3990_erp_add_erp(struct dasd_ccw_req *cqr) if (cqr->cpmode == 1) { cplength = 0; - datasize = sizeof(struct tcw) + sizeof(struct tsb); + /* TCW needs to be 64 byte aligned, so leave enough room */ + datasize = 64 + sizeof(struct tcw) + sizeof(struct tsb); } else { cplength = 2; datasize = 0; @@ -2316,8 +2317,8 @@ static struct dasd_ccw_req *dasd_3990_erp_add_erp(struct dasd_ccw_req *cqr) if (cqr->cpmode == 1) { /* make a shallow copy of the original tcw but set new tsb */ erp->cpmode = 1; - erp->cpaddr = erp->data; - tcw = erp->data; + erp->cpaddr = PTR_ALIGN(erp->data, 64); + tcw = erp->cpaddr; tsb = (struct tsb *) &tcw[1]; *tcw = *((struct tcw *)cqr->cpaddr); tcw->tsb = (long)tsb; |