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 297cdceb0ca4..297f1653b52b 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) | |||
496 | chsc_chp_offline(chpid); | 496 | chsc_chp_offline(chpid); |
497 | } | 497 | } |
498 | 498 | ||
499 | int chp_ssd_get_mask(struct chsc_ssd_info *ssd, struct res_acc_data *data) | ||
500 | { | ||
501 | int i; | ||
502 | int mask; | ||
503 | |||
504 | for (i = 0; i < 8; i++) { | ||
505 | mask = 0x80 >> i; | ||
506 | if (!(ssd->path_mask & mask)) | ||
507 | continue; | ||
508 | if (!chp_id_is_equal(&ssd->chpid[i], &data->chpid)) | ||
509 | continue; | ||
510 | if ((ssd->fla_valid_mask & mask) && | ||
511 | ((ssd->fla[i] & data->fla_mask) != data->fla)) | ||
512 | continue; | ||
513 | return mask; | ||
514 | } | ||
515 | return 0; | ||
516 | } | ||
517 | EXPORT_SYMBOL_GPL(chp_ssd_get_mask); | ||
518 | |||
499 | static inline int info_bit_num(struct chp_id id) | 519 | static inline int info_bit_num(struct chp_id id) |
500 | { | 520 | { |
501 | return id.id + id.cssid * (__MAX_CHPID + 1); | 521 | return id.id + id.cssid * (__MAX_CHPID + 1); |