diff options
Diffstat (limited to 'drivers/s390/cio/chsc.c')
| -rw-r--r-- | drivers/s390/cio/chsc.c | 59 |
1 files changed, 24 insertions, 35 deletions
diff --git a/drivers/s390/cio/chsc.c b/drivers/s390/cio/chsc.c index c08fc5a8df0c..6652a49a49b1 100644 --- a/drivers/s390/cio/chsc.c +++ b/drivers/s390/cio/chsc.c @@ -915,6 +915,8 @@ int chsc_determine_channel_path_desc(struct chp_id chpid, int fmt, int rfmt, return -EINVAL; if ((rfmt == 2) && !css_general_characteristics.cib) return -EINVAL; + if ((rfmt == 3) && !css_general_characteristics.util_str) + return -EINVAL; memset(page, 0, PAGE_SIZE); scpd_area = page; @@ -940,43 +942,30 @@ int chsc_determine_channel_path_desc(struct chp_id chpid, int fmt, int rfmt, } EXPORT_SYMBOL_GPL(chsc_determine_channel_path_desc); -int chsc_determine_base_channel_path_desc(struct chp_id chpid, - struct channel_path_desc *desc) -{ - struct chsc_scpd *scpd_area; - unsigned long flags; - int ret; - - spin_lock_irqsave(&chsc_page_lock, flags); - scpd_area = chsc_page; - ret = chsc_determine_channel_path_desc(chpid, 0, 0, 0, 0, scpd_area); - if (ret) - goto out; - - memcpy(desc, scpd_area->data, sizeof(*desc)); -out: - spin_unlock_irqrestore(&chsc_page_lock, flags); - return ret; +#define chsc_det_chp_desc(FMT, c) \ +int chsc_determine_fmt##FMT##_channel_path_desc( \ + struct chp_id chpid, struct channel_path_desc_fmt##FMT *desc) \ +{ \ + struct chsc_scpd *scpd_area; \ + unsigned long flags; \ + int ret; \ + \ + spin_lock_irqsave(&chsc_page_lock, flags); \ + scpd_area = chsc_page; \ + ret = chsc_determine_channel_path_desc(chpid, 0, FMT, c, 0, \ + scpd_area); \ + if (ret) \ + goto out; \ + \ + memcpy(desc, scpd_area->data, sizeof(*desc)); \ +out: \ + spin_unlock_irqrestore(&chsc_page_lock, flags); \ + return ret; \ } -int chsc_determine_fmt1_channel_path_desc(struct chp_id chpid, - struct channel_path_desc_fmt1 *desc) -{ - struct chsc_scpd *scpd_area; - unsigned long flags; - int ret; - - spin_lock_irqsave(&chsc_page_lock, flags); - scpd_area = chsc_page; - ret = chsc_determine_channel_path_desc(chpid, 0, 1, 1, 0, scpd_area); - if (ret) - goto out; - - memcpy(desc, scpd_area->data, sizeof(*desc)); -out: - spin_unlock_irqrestore(&chsc_page_lock, flags); - return ret; -} +chsc_det_chp_desc(0, 0) +chsc_det_chp_desc(1, 1) +chsc_det_chp_desc(3, 0) static void chsc_initialize_cmg_chars(struct channel_path *chp, u8 cmcv, |