From: Mordechay Goodstein mordechay.goodstein@intel.com
[ Upstream commit 861bae42e1f125a5a255ace3ccd731e59f58ddec ]
Curretly we only mark HW error state "after" trying to collect HW data, but if any HW error happens while colleting HW data we go into endless loop. avoid this by setting HW error state "before" collecting HW data.
Signed-off-by: Mordechay Goodstein mordechay.goodstein@intel.com Signed-off-by: Luca Coelho luciano.coelho@intel.com Link: https://lore.kernel.org/r/iwlwifi.20201209231352.4c7e5a87da15.Ic35b2f28ff08f... Signed-off-by: Luca Coelho luciano.coelho@intel.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/net/wireless/intel/iwlwifi/mvm/ops.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/ops.c b/drivers/net/wireless/intel/iwlwifi/mvm/ops.c index 3acbd5b7ab4b2..87f53810fdac3 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/ops.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/ops.c @@ -1291,6 +1291,12 @@ void iwl_mvm_nic_restart(struct iwl_mvm *mvm, bool fw_error) } else if (mvm->fwrt.cur_fw_img == IWL_UCODE_REGULAR && mvm->hw_registered && !test_bit(STATUS_TRANS_DEAD, &mvm->trans->status)) { + /* This should be first thing before trying to collect any + * data to avoid endless loops if any HW error happens while + * collecting debug data. + */ + set_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status); + if (mvm->fw->ucode_capa.error_log_size) { u32 src_size = mvm->fw->ucode_capa.error_log_size; u32 src_addr = mvm->fw->ucode_capa.error_log_addr; @@ -1309,7 +1315,6 @@ void iwl_mvm_nic_restart(struct iwl_mvm *mvm, bool fw_error)
if (fw_error && mvm->fw_restart > 0) mvm->fw_restart--; - set_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status); ieee80211_restart_hw(mvm->hw); } }