diff options
Diffstat (limited to 'drivers/s390/cio/cio.c')
| -rw-r--r-- | drivers/s390/cio/cio.c | 30 |
1 files changed, 24 insertions, 6 deletions
diff --git a/drivers/s390/cio/cio.c b/drivers/s390/cio/cio.c index be53f0ee2b1c..0511fe31d049 100644 --- a/drivers/s390/cio/cio.c +++ b/drivers/s390/cio/cio.c @@ -498,13 +498,8 @@ int cio_create_sch_lock(struct subchannel *sch) return 0; } -static int cio_validate_io_subchannel(struct subchannel *sch) +static int cio_check_devno_blacklisted(struct subchannel *sch) { - /* Initialization for io subchannels. */ - if (!css_sch_is_valid(&sch->schib)) - return -ENODEV; - - /* Devno is valid. */ if (is_blacklisted(sch->schid.ssid, sch->schib.pmcw.dev)) { /* * This device must not be known to Linux. So we simply @@ -518,6 +513,26 @@ static int cio_validate_io_subchannel(struct subchannel *sch) return 0; } +static int cio_validate_io_subchannel(struct subchannel *sch) +{ + /* Initialization for io subchannels. */ + if (!css_sch_is_valid(&sch->schib)) + return -ENODEV; + + /* Devno is valid. */ + return cio_check_devno_blacklisted(sch); +} + +static int cio_validate_msg_subchannel(struct subchannel *sch) +{ + /* Initialization for message subchannels. */ + if (!css_sch_is_valid(&sch->schib)) + return -ENODEV; + + /* Devno is valid. */ + return cio_check_devno_blacklisted(sch); +} + /** * cio_validate_subchannel - basic validation of subchannel * @sch: subchannel structure to be filled out @@ -573,6 +588,9 @@ int cio_validate_subchannel(struct subchannel *sch, struct subchannel_id schid) case SUBCHANNEL_TYPE_IO: err = cio_validate_io_subchannel(sch); break; + case SUBCHANNEL_TYPE_MSG: + err = cio_validate_msg_subchannel(sch); + break; default: err = 0; } |