From f79968eb417574f84a06c22510cbeb414e89a809 Mon Sep 17 00:00:00 2001 From: Emmanuel Grumbach Date: Sun, 12 May 2024 07:58:57 +0300 Subject: [PATCH] wifi: iwlwifi: mvm: leave a print in the logs when we call fw_nmi() When we crash the firmware, we need to know why we decided to do so. Almost all the callsites of iwl_force_nmi() print something in the logs that explain why the driver decided to crash the firmware. Debugfs doesn't print anything and it is then hard to understand why the firmware has crashed. Add a simple print in the debugfs hook to ease the debug. Signed-off-by: Emmanuel Grumbach Signed-off-by: Miri Korenblit Link: https://msgid.link/20240512075822.e2558de222dc.Idd81777c47264e6f557b086625895c1dc2f667f3@changeid Signed-off-by: Johannes Berg --- drivers/net/wireless/intel/iwlwifi/mvm/debugfs.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/debugfs.c b/drivers/net/wireless/intel/iwlwifi/mvm/debugfs.c index 79f4ac8cbc729..96c9382b98fb5 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/debugfs.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/debugfs.c @@ -1396,6 +1396,8 @@ static ssize_t iwl_dbgfs_fw_nmi_write(struct iwl_mvm *mvm, char *buf, if (!iwl_mvm_firmware_running(mvm)) return -EIO; + IWL_ERR(mvm, "Triggering an NMI from debugfs\n"); + if (count == 6 && !strcmp(buf, "nolog\n")) set_bit(IWL_MVM_STATUS_SUPPRESS_ERROR_LOG_ONCE, &mvm->status);