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[S390] dasd: enable prefix independent of pav support 

The DASD device driver needs to explicitly enable the prefix command
on the storage server, before it can be used. Originally we enabled
this command along with others only if we wanted to support PAV.
However, today we require this command for other features like
High Performance FICON as well, so we need to always enable prefix.

Signed-off-by: Stefan Weinhuber <wein@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
wifi-calibration
Stefan Weinhuber 2009-12-07 12:51:50 +01:00 committed by Martin Schwidefsky
parent 779c27820a
commit 626350b63e
1 changed files with 2 additions and 2 deletions
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4
drivers/s390/block/dasd_eckd.c
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@ -1012,9 +1012,9 @@ static struct dasd_ccw_req *dasd_eckd_build_psf_ssc(struct dasd_device *device,
}
psf_ssc_data = (struct dasd_psf_ssc_data *)cqr->data;
psf_ssc_data->order = PSF_ORDER_SSC;
psf_ssc_data->suborder = 0x40;
psf_ssc_data->suborder = 0xc0;
if (enable_pav) {
psf_ssc_data->suborder |= 0x88;
psf_ssc_data->suborder |= 0x08;
psf_ssc_data->reserved[0] = 0x88;
}
ccw = cqr->cpaddr;