diff options
| -rw-r--r-- | drivers/infiniband/hw/ipath/ipath_mad.c | 16 | ||||
| -rw-r--r-- | drivers/infiniband/hw/ipath/ipath_sysfs.c | 9 |
2 files changed, 17 insertions, 8 deletions
diff --git a/drivers/infiniband/hw/ipath/ipath_mad.c b/drivers/infiniband/hw/ipath/ipath_mad.c index 72d1db89db8..25908b02fbe 100644 --- a/drivers/infiniband/hw/ipath/ipath_mad.c +++ b/drivers/infiniband/hw/ipath/ipath_mad.c @@ -87,7 +87,8 @@ static int recv_subn_get_nodeinfo(struct ib_smp *smp, struct ipath_devdata *dd = to_idev(ibdev)->dd; u32 vendor, majrev, minrev; - if (smp->attr_mod) + /* GUID 0 is illegal */ + if (smp->attr_mod || (dd->ipath_guid == 0)) smp->status |= IB_SMP_INVALID_FIELD; nip->base_version = 1; @@ -131,10 +132,15 @@ static int recv_subn_get_guidinfo(struct ib_smp *smp, * We only support one GUID for now. If this changes, the * portinfo.guid_cap field needs to be updated too. */ - if (startgx == 0) - /* The first is a copy of the read-only HW GUID. */ - *p = to_idev(ibdev)->dd->ipath_guid; - else + if (startgx == 0) { + __be64 g = to_idev(ibdev)->dd->ipath_guid; + if (g == 0) + /* GUID 0 is illegal */ + smp->status |= IB_SMP_INVALID_FIELD; + else + /* The first is a copy of the read-only HW GUID. */ + *p = g; + } else smp->status |= IB_SMP_INVALID_FIELD; return reply(smp); diff --git a/drivers/infiniband/hw/ipath/ipath_sysfs.c b/drivers/infiniband/hw/ipath/ipath_sysfs.c index b48ebf62e5d..182de34f9f4 100644 --- a/drivers/infiniband/hw/ipath/ipath_sysfs.c +++ b/drivers/infiniband/hw/ipath/ipath_sysfs.c @@ -257,7 +257,7 @@ static ssize_t store_guid(struct device *dev, struct ipath_devdata *dd = dev_get_drvdata(dev); ssize_t ret; unsigned short guid[8]; - __be64 nguid; + __be64 new_guid; u8 *ng; int i; @@ -266,7 +266,7 @@ static ssize_t store_guid(struct device *dev, &guid[4], &guid[5], &guid[6], &guid[7]) != 8) goto invalid; - ng = (u8 *) &nguid; + ng = (u8 *) &new_guid; for (i = 0; i < 8; i++) { if (guid[i] > 0xff) @@ -274,7 +274,10 @@ static ssize_t store_guid(struct device *dev, ng[i] = guid[i]; } - dd->ipath_guid = nguid; + if (new_guid == 0) + goto invalid; + + dd->ipath_guid = new_guid; dd->ipath_nguid = 1; ret = strlen(buf); |