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iwlwifi: mvm: take IWL_MVM_REF_UCODE_DOWN before restarting hw

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we unref IWL_MVM_REF_UCODE_DOWN on iwl_mvm_restart_complete().

Usually, the restart is initiated by iwl_mvm_nic_restart(),
which takes the reference before restarting the hw.

However, in D3 flow we might call ieee80211_restart_hw()
directly (in case of suspend error and on d3_test-resume),
which without taking the ref first. fix it.

Signed-off-by: Eliad Peller <eliadx.peller@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
This commit is contained in:
Eliad Peller 2015-03-03 12:03:20 +02:00 committed by Emmanuel Grumbach
parent 28c8c19a00
commit 48e6775168
1 changed files with 2 additions and 0 deletions
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2
drivers/net/wireless/iwlwifi/mvm/d3.c
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@ -1131,6 +1131,7 @@ static int __iwl_mvm_suspend(struct ieee80211_hw *hw,
iwl_trans_d3_suspend(mvm->trans, test);
out:
if (ret < 0) {
iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
ieee80211_restart_hw(mvm->hw);
iwl_mvm_free_nd(mvm);
}
@ -2016,6 +2017,7 @@ static int iwl_mvm_d3_test_release(struct inode *inode, struct file *file)
__iwl_mvm_resume(mvm, true);
rtnl_unlock();
iwl_abort_notification_waits(&mvm->notif_wait);
iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
ieee80211_restart_hw(mvm->hw);
/* wait for restart and disconnect all interfaces */