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(parent: 4837696) | patch
iwlwifi: mvm: avoid possible deadlock in TX path
authorJohannes Berg <johannes.berg@intel.com>
Tue, 5 Mar 2019 12:32:30 +0000 (13:32 +0100)
committerLuca Coelho <luciano.coelho@intel.com>
Wed, 3 Apr 2019 08:13:05 +0000 (11:13 +0300)
commitf5ae2f932e2f8f4f79796f44832ae8fca26f188a
tree435ad2d9108537870ab6aae7fb935c110a81724atree | snapshot
parent4837696f6b5451242b2095764287b6336e844683commit | diff
iwlwifi: mvm: avoid possible deadlock in TX path

iwl_mvm_tx_mpdu() may run from iwl_mvm_add_new_dqa_stream_wk(), where
soft-IRQs aren't disabled. In this case, it may hold the station lock
and be interrupted by a soft-IRQ that also wants to acquire said lock,
leading to a deadlock.

Fix it by disabling soft-IRQs in iwl_mvm_add_new_dqa_stream_wk().

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
drivers/net/wireless/intel/iwlwifi/mvm/sta.c diff | blob | history
Domain: System / Kernel;