iwl_mvm_fw_dbg_collect allows to collect debug data from
the firmware. Most of the firmware interaction is done in
non-sleepable context. It makes little sense to force the
caller of iwl_mvm_fw_dbg_collect to sleep.
Defer the actual collection to a worker so that this
function will be able to be called from any context.
Reviewed-by: Eran Harary <eran.harary@xxxxxxxxx>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@xxxxxxxxx>
---
drivers/net/wireless/iwlwifi/mvm/fw.c | 8 +-------
drivers/net/wireless/iwlwifi/mvm/ops.c | 6 ++++++
2 files changed, 7 insertions(+), 7 deletions(-)
diff --git a/drivers/net/wireless/iwlwifi/mvm/fw.c b/drivers/net/wireless/iwlwifi/mvm/fw.c
index 534ee31..52338b7 100644
--- a/drivers/net/wireless/iwlwifi/mvm/fw.c
+++ b/drivers/net/wireless/iwlwifi/mvm/fw.c
@@ -402,8 +402,6 @@ out:
void iwl_mvm_fw_dbg_collect(struct iwl_mvm *mvm)
{
- lockdep_assert_held(&mvm->mutex);
-
/* stop recording */
if (mvm->cfg->device_family == IWL_DEVICE_FAMILY_7000) {
iwl_set_bits_prph(mvm->trans, MON_BUFF_SAMPLE_CTL, 0x100);
@@ -412,11 +410,7 @@ void iwl_mvm_fw_dbg_collect(struct iwl_mvm *mvm)
iwl_write_prph(mvm->trans, DBGC_OUT_CTRL, 0);
}
- iwl_mvm_fw_error_dump(mvm);
-
- /* start recording again */
- WARN_ON_ONCE(mvm->fw->dbg_dest_tlv &&
- iwl_mvm_start_fw_dbg_conf(mvm, mvm->fw_dbg_conf));
+ schedule_work(&mvm->fw_error_dump_wk);
}
int iwl_mvm_start_fw_dbg_conf(struct iwl_mvm *mvm, enum iwl_fw_dbg_conf conf_id)
diff --git a/drivers/net/wireless/iwlwifi/mvm/ops.c b/drivers/net/wireless/iwlwifi/mvm/ops.c
index 12b565a..90143aa 100644
--- a/drivers/net/wireless/iwlwifi/mvm/ops.c
+++ b/drivers/net/wireless/iwlwifi/mvm/ops.c
@@ -825,6 +825,12 @@ static void iwl_mvm_fw_error_dump_wk(struct work_struct *work)
mutex_lock(&mvm->mutex);
iwl_mvm_fw_error_dump(mvm);
+
+ /* start recording again if the firmware is not crashed */
+ WARN_ON_ONCE((!test_bit(STATUS_FW_ERROR, &mvm->trans->status)) &&
+ mvm->fw->dbg_dest_tlv &&
+ iwl_mvm_start_fw_dbg_conf(mvm, mvm->fw_dbg_conf));
+
mutex_unlock(&mvm->mutex);
iwl_mvm_unref(mvm, IWL_MVM_REF_FW_DBG_COLLECT);
--
1.9.1
--
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