iwlwifi: mvm: disable dbg data collect when fw isn't alive

If FW isn't alive, trying to collect debug data will
result in errors both in driver and in the collected
data, so just warn and leave the collecting function
in this case.

Signed-off-by: Liad Kaufman <liad.kaufman@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>

diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/fw-dbg.c b/drivers/net/wireless/intel/iwlwifi/mvm/fw-dbg.c
index c66baf1e1443b828dc8a4a14565eba3da9e9d5d3..d5cb47e2fe449ee6bb078dfc368184d832c8a1a7 100644 (file)
--- a/drivers/net/wireless/intel/iwlwifi/mvm/fw-dbg.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/fw-dbg.c
@@ -915,6 +915,10 @@ int iwl_mvm_fw_dbg_collect_desc(struct iwl_mvm *mvm,
        if (trigger)
                delay = msecs_to_jiffies(le32_to_cpu(trigger->stop_delay));
 
+       if (WARN(mvm->trans->state == IWL_TRANS_NO_FW,
+                "Can't collect dbg data when FW isn't alive\n"))
+               return -EIO;
+
        if (test_and_set_bit(IWL_MVM_STATUS_DUMPING_FW_LOG, &mvm->status))
                return -EBUSY;