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From:   Luca Coelho <luca@coelho.fi>
To:     kvalo@kernel.org
Cc:     luca@coelho.fi, linux-wireless@vger.kernel.org
Date:   Fri,  4 Mar 2022 13:21:25 +0200
Message-Id: <iwlwifi.20220304131517.10ea0e115d05.Idfb3706133bf3b15f1f68f1145e77e89947449d1@changeid>
In-Reply-To: <20220304112129.219513-1-luca@coelho.fi>
References: <20220304112129.219513-1-luca@coelho.fi>
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Subject: [PATCH 09/13] iwlwifi: use 4k queue size for Bz A-step
Precedence: bulk

From: Johannes Berg <johannes.berg@intel.com>

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>
---
 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);
-- 
2.35.1