diff options
Diffstat (limited to 'drivers/s390/block/dasd_int.h')
| -rw-r--r-- | drivers/s390/block/dasd_int.h | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/drivers/s390/block/dasd_int.h b/drivers/s390/block/dasd_int.h index 4aed5ed70836..8de29be32a56 100644 --- a/drivers/s390/block/dasd_int.h +++ b/drivers/s390/block/dasd_int.h @@ -241,6 +241,13 @@ struct dasd_ccw_req { typedef struct dasd_ccw_req *(*dasd_erp_fn_t) (struct dasd_ccw_req *); /* + * A single CQR can only contain a maximum of 255 CCWs. It is limited by + * the locate record and locate record extended count value which can only hold + * 1 Byte max. + */ +#define DASD_CQR_MAX_CCW 255 + +/* * Unique identifier for dasd device. */ #define UA_NOT_CONFIGURED 0x00 @@ -438,7 +445,7 @@ struct dasd_device { /* Device discipline stuff. */ struct dasd_discipline *discipline; struct dasd_discipline *base_discipline; - char *private; + void *private; struct dasd_path path_data; /* Device state and target state. */ |