From 3d0890985ac4dff781b7feba19fedda547314749 Mon Sep 17 00:00:00 2001 From: Dave Olson Date: Fri, 5 Dec 2008 11:14:38 -0800 Subject: 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 Signed-off-by: Roland Dreier --- drivers/infiniband/hw/ipath/ipath_verbs.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'drivers/infiniband/hw/ipath/ipath_verbs.c') 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 -- cgit