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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_mad.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_mad.c')
-rw-r--r--drivers/infiniband/hw/ipath/ipath_mad.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/ipath/ipath_mad.c b/drivers/infiniband/hw/ipath/ipath_mad.c
index be4fc9ada8e7..17a123197477 100644
--- a/drivers/infiniband/hw/ipath/ipath_mad.c
+++ b/drivers/infiniband/hw/ipath/ipath_mad.c
@@ -348,6 +348,7 @@ bail:
*/
static int get_pkeys(struct ipath_devdata *dd, u16 * pkeys)
{
+ /* always a kernel port, no locking needed */
struct ipath_portdata *pd = dd->ipath_pd[0];
memcpy(pkeys, pd->port_pkeys, sizeof(pd->port_pkeys));
@@ -730,6 +731,7 @@ static int set_pkeys(struct ipath_devdata *dd, u16 *pkeys)
int i;
int changed = 0;
+ /* always a kernel port, no locking needed */
pd = dd->ipath_pd[0];
for (i = 0; i < ARRAY_SIZE(pd->port_pkeys); i++) {