[S390] cio: Base message subchannel handling.
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
diff --git a/drivers/s390/cio/cio.c b/drivers/s390/cio/cio.c
index be53f0e..0511fe3 100644
--- a/drivers/s390/cio/cio.c
+++ b/drivers/s390/cio/cio.c
@@ -498,13 +498,8 @@
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 @@
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 @@
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;
}