[PATCH v2] mac80211: Avoid STA expiration timer truncation to u32

[Masashi Honma <masashi.honma@gmail.com>]

On some combination of plink_timeout and HZ, the STA expiration timer will be
unexpectedly truncated to u32. Maybe there is a question "Who sets such a large
number to plink_timeout ?". At least wpa_supplicant will set 0xffffffff to
plink_timeout to disable this timer because wpa_supplicant has it's own
expiration mechanism.

Signed-off-by: Masashi Honma <masashi.honma@gmail.com>
---
 net/mac80211/mesh.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/net/mac80211/mesh.c b/net/mac80211/mesh.c
index 0c8b2a7..bb721a0 100644
--- a/net/mac80211/mesh.c
+++ b/net/mac80211/mesh.c
@@ -574,7 +574,8 @@ static void ieee80211_mesh_housekeeping(struct ieee80211_sub_if_data *sdata)
 	struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
 	u32 changed;
 
-	ieee80211_sta_expire(sdata, ifmsh->mshcfg.plink_timeout * HZ);
+	ieee80211_sta_expire(sdata, ifmsh->mshcfg.plink_timeout *
+			     (unsigned long)HZ);
 	mesh_path_expire(sdata);
 
 	changed = mesh_accept_plinks_update(sdata);
-- 
2.1.0