diff options
| author | Dave Olson <dave.olson@qlogic.com> | 2008-12-05 11:14:38 -0800 |
|---|---|---|
| committer | Roland Dreier <rolandd@cisco.com> | 2008-12-05 11:14:38 -0800 |
| commit | 3d0890985ac4dff781b7feba19fedda547314749 (patch) | |
| tree | 4e18e4e70c32abf9450c223db97affb1d05dbeeb /drivers/infiniband/hw/ipath/ipath_mad.c | |
| parent | 1bf7724e093cf3071d943d53bfa4de8b8e50426b (diff) | |
| download | lwn-3d0890985ac4dff781b7feba19fedda547314749.tar.gz lwn-3d0890985ac4dff781b7feba19fedda547314749.zip | |
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.c | 2 |
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++) { |