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Commit ccd53fa2 authored by Stefan Haberland's avatar Stefan Haberland Committed by Martin Schwidefsky
Browse files

s390/dasd: check if query host access feature is supported 



Some storage servers might not support the query host access feature.
Check if the corresponding feature code is set.

Signed-off-by: default avatarStefan Haberland <sth@linux.vnet.ibm.com>
Signed-off-by: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
parent 2fa5ed7d

drivers/s390/block/dasd_eckd.c

+4 −0
Original line number Diff line number Diff line
@@ -5172,6 +5172,10 @@ static int dasd_eckd_query_host_access(struct dasd_device *device, 
	if (!device->block && private->lcu->pav == HYPER_PAV)

		return -EOPNOTSUPP;



	/* may not be supported by the storage server */

	if (!(private->features.feature[14] & 0x80))

		return -EOPNOTSUPP;



	cqr = dasd_smalloc_request(DASD_ECKD_MAGIC, 1 /* PSF */	+ 1 /* RSSD */,

				   sizeof(struct dasd_psf_prssd_data) + 1,

				   device);