diff options
| author | Eliad Peller <eliad@wizery.com> | 2015-10-25 10:59:36 +0200 |
|---|---|---|
| committer | Johannes Berg <johannes.berg@intel.com> | 2015-11-03 10:41:12 +0100 |
| commit | 968a76cef3d1bb9a3b4d135cd788056e742859f3 (patch) | |
| tree | dfe73df7dae4879fe96b045cdffc0d2d64e829be /net/mac80211/util.c | |
| parent | c189a685b83955a39884dc2bdae531bc0adf3b98 (diff) | |
| download | lwn-968a76cef3d1bb9a3b4d135cd788056e742859f3.tar.gz lwn-968a76cef3d1bb9a3b4d135cd788056e742859f3.zip | |
mac80211: call drv_stop only if driver is started
If drv_start() fails during hw_restart, all the running
interfaces are being closed/stopped, which results in
drv_stop() being called, although the driver was never
started successfully.
This might cause drivers to perform operations on uninitialized
memory (as they assume it was initialized on drv_start)
Consider the local->started flag, and call the driver's stop()
op only if drv_start() succeeded before.
Move drv_start() and drv_stop() to driver-ops.c, as they are no
longer simple wrappers.
Signed-off-by: Eliad Peller <eliadx.peller@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net/mac80211/util.c')
| -rw-r--r-- | net/mac80211/util.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/net/mac80211/util.c b/net/mac80211/util.c index b0e3a4248bd5..551164dabbaf 100644 --- a/net/mac80211/util.c +++ b/net/mac80211/util.c @@ -1665,7 +1665,6 @@ static void ieee80211_handle_reconfig_failure(struct ieee80211_local *local) local->resuming = false; local->suspended = false; - local->started = false; local->in_reconfig = false; /* scheduled scan clearly can't be running any more, but tell @@ -1764,6 +1763,8 @@ int ieee80211_reconfig(struct ieee80211_local *local) if (suspended && local->in_reconfig && !reconfig_due_to_wowlan) cancel_work_sync(&local->restart_work); + local->started = false; + /* * Upon resume hardware can sometimes be goofy due to * various platform / driver / bus issues, so restarting |