diff options
Diffstat (limited to 'drivers/s390/cio/chp.c')
| -rw-r--r-- | drivers/s390/cio/chp.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/s390/cio/chp.c b/drivers/s390/cio/chp.c index 297cdceb0ca..297f1653b52 100644 --- a/drivers/s390/cio/chp.c +++ b/drivers/s390/cio/chp.c @@ -496,6 +496,26 @@ void chp_process_crw(int id, int status) chsc_chp_offline(chpid); } +int chp_ssd_get_mask(struct chsc_ssd_info *ssd, struct res_acc_data *data) +{ + int i; + int mask; + + for (i = 0; i < 8; i++) { + mask = 0x80 >> i; + if (!(ssd->path_mask & mask)) + continue; + if (!chp_id_is_equal(&ssd->chpid[i], &data->chpid)) + continue; + if ((ssd->fla_valid_mask & mask) && + ((ssd->fla[i] & data->fla_mask) != data->fla)) + continue; + return mask; + } + return 0; +} +EXPORT_SYMBOL_GPL(chp_ssd_get_mask); + static inline int info_bit_num(struct chp_id id) { return id.id + id.cssid * (__MAX_CHPID + 1); |