提交 4a31ba57 编写于 作者: S Stefan Weinhuber 提交者: Martin Schwidefsky

[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: NStefan Weinhuber <wein@de.ibm.com>
Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
上级 1bff7792
......@@ -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;
......
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