diff options
| author | Bryan O'Sullivan <bos@pathscale.com> | 2006-09-28 20:00:02 +0400 |
|---|---|---|
| committer | Roland Dreier <rolandd@cisco.com> | 2006-09-28 22:16:32 +0400 |
| commit | 11b054fe1d453954449a86de178bb98274bb86ef (patch) | |
| tree | 9c53e99d7496389260f717f1c5e730837a2d1cfe /drivers/infiniband/hw/ipath/ipath_sysfs.c | |
| parent | c78f6415e964aafd3a91d834970c16b613e421d9 (diff) | |
| download | linux-11b054fe1d453954449a86de178bb98274bb86ef.tar.xz | |
IB/ipath: Clean up handling of GUID 0
Respond with an error to the SM if our GUID is 0, and don't allow the
user to set our GUID to 0.
Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
Diffstat (limited to 'drivers/infiniband/hw/ipath/ipath_sysfs.c')
| -rw-r--r-- | drivers/infiniband/hw/ipath/ipath_sysfs.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/drivers/infiniband/hw/ipath/ipath_sysfs.c b/drivers/infiniband/hw/ipath/ipath_sysfs.c index b48ebf62e5dd..182de34f9f47 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); |