diff options
| author | Johannes Berg <johannes.berg@intel.com> | 2023-05-14 12:15:46 +0300 |
|---|---|---|
| committer | Johannes Berg <johannes.berg@intel.com> | 2023-05-16 20:27:04 +0300 |
| commit | c2d8b7f257b2398f2d866205365895e038beca12 (patch) | |
| tree | 1eb7a1cec041990759204a98e04b37e934635f63 | |
| parent | 9e949dfdc5d1697ccbcc19c06f5133e1833d8eea (diff) | |
| download | linux-c2d8b7f257b2398f2d866205365895e038beca12.tar.xz | |
wifi: iwlwifi: mvm: fix cancel_delayed_work_sync() deadlock
Lockdep points out that we can deadlock here by calling
cancel_delayed_work_sync() because that might be already
running and gotten interrupted by the NAPI soft-IRQ.
Even just calling something that can sleep is wrong in
this context though.
Luckily, it doesn't even really matter since the things
we need to do are idempotent, so just drop the _sync().
Fixes: e5d153ec54f0 ("iwlwifi: mvm: fix CSA AP side")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20230514120631.b1813c823b4d.I9d20cc06d24fa40b6774d3dd95ea5e2bf8dd015b@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
| -rw-r--r-- | drivers/net/wireless/intel/iwlwifi/mvm/rxmq.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/rxmq.c b/drivers/net/wireless/intel/iwlwifi/mvm/rxmq.c index e1d02c260e69..01432274a6da 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/rxmq.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/rxmq.c @@ -2512,7 +2512,7 @@ void iwl_mvm_rx_mpdu_mq(struct iwl_mvm *mvm, struct napi_struct *napi, RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL); /* Unblock BCAST / MCAST station */ iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, false); - cancel_delayed_work_sync(&mvm->cs_tx_unblock_dwork); + cancel_delayed_work(&mvm->cs_tx_unblock_dwork); } } |