Commit 4187fbd6 authored by Liad Kaufman's avatar Liad Kaufman Committed by Greg Kroah-Hartman

iwlwifi: dbg: allow wrt collection before ALIVE

[ Upstream commit dfd4b08c ]

Even if no ALIVE was received, the WRT data can still
be collected. Add this.
Signed-off-by: default avatarLiad Kaufman <liad.kaufman@intel.com>
Signed-off-by: default avatarLuca Coelho <luciano.coelho@intel.com>
Signed-off-by: default avatarSasha Levin <sashal@kernel.org>
parent d1efab09
......@@ -950,7 +950,20 @@ int iwl_fw_dbg_collect_desc(struct iwl_fw_runtime *fwrt,
if (trigger)
delay = msecs_to_jiffies(le32_to_cpu(trigger->stop_delay));
if (WARN(fwrt->trans->state == IWL_TRANS_NO_FW,
/*
* If the loading of the FW completed successfully, the next step is to
* get the SMEM config data. Thus, if fwrt->smem_cfg.num_lmacs is non
* zero, the FW was already loaded successully. If the state is "NO_FW"
* in such a case - WARN and exit, since FW may be dead. Otherwise, we
* can try to collect the data, since FW might just not be fully
* loaded (no "ALIVE" yet), and the debug data is accessible.
*
* Corner case: got the FW alive but crashed before getting the SMEM
* config. In such a case, due to HW access problems, we might
* collect garbage.
*/
if (WARN((fwrt->trans->state == IWL_TRANS_NO_FW) &&
fwrt->smem_cfg.num_lmacs,
"Can't collect dbg data when FW isn't alive\n"))
return -EIO;
......
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