From bb16ffd561b60638108f1cc97b08f18270468678 Mon Sep 17 00:00:00 2001
From: Johannes Berg <johannes.berg@intel.com>
Date: Fri, 4 Mar 2022 13:21:25 +0200
Subject: [PATCH] iwlwifi: use 4k queue size for Bz A-step
Git-commit: bb16ffd561b60638108f1cc97b08f18270468678
Patch-mainline: v5.18-rc1
References: bsc#1202131
There's a hardware bug in Bz A-step that can be worked
around by using 4k queue size, so do that.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20220304131517.10ea0e115d05.Idfb3706133bf3b15f1f68f1145e77e89947449d1@changeid
Acked-by: Takashi Iwai <tiwai@suse.de>
---
drivers/net/wireless/intel/iwlwifi/queue/tx.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/net/wireless/intel/iwlwifi/queue/tx.c b/drivers/net/wireless/intel/iwlwifi/queue/tx.c
index 42e631cc16e8..726185d6fab8 100644
--- a/drivers/net/wireless/intel/iwlwifi/queue/tx.c
+++ b/drivers/net/wireless/intel/iwlwifi/queue/tx.c
@@ -1199,6 +1199,10 @@ int iwl_txq_dyn_alloc(struct iwl_trans *trans, u32 flags, u32 sta_mask,
};
int ret;
+ if (trans->trans_cfg->device_family == IWL_DEVICE_FAMILY_BZ &&
+ trans->hw_rev_step == SILICON_A_STEP)
+ size = 4096;
+
txq = iwl_txq_dyn_alloc_dma(trans, size, timeout);
if (IS_ERR(txq))
return PTR_ERR(txq);
--
2.35.3