Merge branch 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee13...

[pandora-kernel.git] / drivers / infiniband / hw / ipath / ipath_sysfs.c

diff --git a/drivers/infiniband/hw/ipath/ipath_sysfs.c b/drivers/infiniband/hw/ipath/ipath_sysfs.c
index b48ebf6..182de34 100644 (file)
--- 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);