diff options
| author | Shaul Triebitz <shaul.triebitz@intel.com> | 2018-01-11 16:18:46 +0200 |
|---|---|---|
| committer | Luca Coelho <luciano.coelho@intel.com> | 2018-03-02 10:20:01 +0200 |
| commit | 8745f12a6600dd9d31122588621d4c8ddb332cd7 (patch) | |
| tree | 33360587d5e1c211c94fa5b59c3bd692c57e363c /drivers/net/wireless/intel/iwlwifi/mvm/debugfs.c | |
| parent | 63dd5d022f4766e6b05ee611124afcc7cbfbb953 (diff) | |
iwlwifi: avoid collecting firmware dump if not loaded
Trying to collect firmware debug data while firmware
is not loaded causes various errors (e.g. failing NIC access).
This causes even a bigger issue if at that time the
HW radio is off.
In that case, when later turning the radio on, the Driver
fails to read the HW (registers contain garbage values).
(It may be that the CSR_GP_CNTRL_REG_FLAG_RFKILL_WAKE_L1A_EN
bit is cleared on faulty NIC access - since the same behavior
was seen in HW RFKILL toggling before setting that bit.)
Signed-off-by: Shaul Triebitz <shaul.triebitz@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Diffstat (limited to 'drivers/net/wireless/intel/iwlwifi/mvm/debugfs.c')
| -rw-r--r-- | drivers/net/wireless/intel/iwlwifi/mvm/debugfs.c | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/debugfs.c b/drivers/net/wireless/intel/iwlwifi/mvm/debugfs.c index a7892c1254a2..9c436d8d001d 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/debugfs.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/debugfs.c @@ -8,6 +8,7 @@ * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved. * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH * Copyright(c) 2016 - 2017 Intel Deutschland GmbH + * Copyright(c) 2018 Intel Corporation * * This program is free software; you can redistribute it and/or modify * it under the terms of version 2 of the GNU General Public License as @@ -35,6 +36,7 @@ * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved. * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH * Copyright(c) 2016 - 2017 Intel Deutschland GmbH + * Copyright(c) 2018 Intel Corporation * All rights reserved. * * Redistribution and use in source and binary forms, with or without @@ -1281,9 +1283,6 @@ static ssize_t iwl_dbgfs_fw_dbg_collect_write(struct iwl_mvm *mvm, { int ret; - if (!iwl_mvm_firmware_running(mvm)) - return -EIO; - ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PRPH_WRITE); if (ret) return ret; |