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authorDave Olson <dave.olson@qlogic.com>2008-12-05 11:14:38 -0800
committerRoland Dreier <rolandd@cisco.com>2008-12-05 11:14:38 -0800
commit3d0890985ac4dff781b7feba19fedda547314749 (patch)
tree4e18e4e70c32abf9450c223db97affb1d05dbeeb /drivers/infiniband/hw/ipath/ipath_verbs.c
parent1bf7724e093cf3071d943d53bfa4de8b8e50426b (diff)
IB/ipath: Add locking for interrupt use of ipath_pd contexts vs free
Fixes timing race resulting in panic. Not a performance sensitive path. Signed-off-by: Dave Olson <dave.olson@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
Diffstat (limited to 'drivers/infiniband/hw/ipath/ipath_verbs.c')
-rw-r--r--drivers/infiniband/hw/ipath/ipath_verbs.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/infiniband/hw/ipath/ipath_verbs.c b/drivers/infiniband/hw/ipath/ipath_verbs.c
index eabc4247860b..cdf0e6abd34d 100644
--- a/drivers/infiniband/hw/ipath/ipath_verbs.c
+++ b/drivers/infiniband/hw/ipath/ipath_verbs.c
@@ -1852,7 +1852,7 @@ unsigned ipath_get_npkeys(struct ipath_devdata *dd)
}
/**
- * ipath_get_pkey - return the indexed PKEY from the port 0 PKEY table
+ * ipath_get_pkey - return the indexed PKEY from the port PKEY table
* @dd: the infinipath device
* @index: the PKEY index
*/
@@ -1860,6 +1860,7 @@ unsigned ipath_get_pkey(struct ipath_devdata *dd, unsigned index)
{
unsigned ret;
+ /* always a kernel port, no locking needed */
if (index >= ARRAY_SIZE(dd->ipath_pd[0]->port_pkeys))
ret = 0;
else