From d41cdbcd71185884c3bacc97c42dabd82a058d7e Mon Sep 17 00:00:00 2001
From: Rotem Saado <rotem.saado@intel.com>
Date: Sun, 17 Oct 2021 16:59:48 +0300
Subject: [PATCH] iwlwifi: dbg: treat dbgc allocation failure when tlv is missing
Git-commit: d41cdbcd71185884c3bacc97c42dabd82a058d7e
Patch-mainline: v5.16-rc1
References: bsc#1202131

in case allocation tlv is missing for specific dbgc id,
treat it as allocation failure.
with this behavior we removing later the unsupported regions
relating to the failed dbgc allocation.
this saves operational driver memory and run time at collecting
debug data.

Signed-off-by: Rotem Saado <rotem.saado@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20211017165728.4cd241abf1de.I8f6cf00a7266675dfebdc01a73c1ac6e001855b9@changeid
Acked-by: Takashi Iwai <tiwai@suse.de>

---
 drivers/net/wireless/intel/iwlwifi/iwl-dbg-tlv.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/net/wireless/intel/iwlwifi/iwl-dbg-tlv.c b/drivers/net/wireless/intel/iwlwifi/iwl-dbg-tlv.c
index 869270020763..75d5ed0c3204 100644
--- a/drivers/net/wireless/intel/iwlwifi/iwl-dbg-tlv.c
+++ b/drivers/net/wireless/intel/iwlwifi/iwl-dbg-tlv.c
@@ -1149,8 +1149,10 @@ static void iwl_dbg_tlv_init_cfg(struct iwl_fw_runtime *fwrt)
 			&fwrt->trans->dbg.fw_mon_cfg[i];
 		u32 dest = le32_to_cpu(fw_mon_cfg->buf_location);
 
-		if (dest == IWL_FW_INI_LOCATION_INVALID)
+		if (dest == IWL_FW_INI_LOCATION_INVALID) {
+			failed_alloc |= BIT(i);
 			continue;
+		}
 
 		if (*ini_dest == IWL_FW_INI_LOCATION_INVALID)
 			*ini_dest = dest;
-- 
2.35.3