linux-kernel - [PATCH AUTOSEL for 4.9 204/281] iwlwifi: mvm: Fix command queue number on d0i3 flow

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Date:   Mon, 19 Mar 2018 16:01:55 +0000
From:   Sasha Levin <Alexander.Levin@...rosoft.com>
To:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "stable@...r.kernel.org" <stable@...r.kernel.org>
CC:     Haim Dreyfuss <haim.dreyfuss@...el.com>,
        Luca Coelho <luciano.coelho@...el.com>,
        Sasha Levin <Alexander.Levin@...rosoft.com>
Subject: [PATCH AUTOSEL for 4.9 204/281] iwlwifi: mvm: Fix command queue
 number on d0i3 flow

From: Haim Dreyfuss <haim.dreyfuss@...el.com>

[ Upstream commit c72c37b7f392ad7edc10b6092fa48c632ba6f4ed ]

During d0i3 flow we flush all the queue except from the command queue.
Currently, in this flow the command queue is hard coded to 9.
In DQA the command queue number has changed from 9 to 0.
Fix that.

This fixes a problem in runtime PM resume flow.

Fixes: 097129c9e625 ("iwlwifi: mvm: move cmd queue to be #0 in dqa mode")
Signed-off-by: Haim Dreyfuss <haim.dreyfuss@...el.com>
Signed-off-by: Luca Coelho <luciano.coelho@...el.com>
Signed-off-by: Sasha Levin <alexander.levin@...rosoft.com>
---
 drivers/net/wireless/intel/iwlwifi/mvm/mvm.h | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h b/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h
index ed9bf8c759b4..2b1c691bb4b2 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h
@@ -1666,8 +1666,11 @@ int iwl_mvm_find_free_queue(struct iwl_mvm *mvm, u8 sta_id, u8 minq, u8 maxq);
  */
 static inline u32 iwl_mvm_flushable_queues(struct iwl_mvm *mvm)
 {
+	u32 cmd_queue = iwl_mvm_is_dqa_supported(mvm) ? IWL_MVM_DQA_CMD_QUEUE :
+		IWL_MVM_CMD_QUEUE;
+
 	return ((BIT(mvm->cfg->base_params->num_of_queues) - 1) &
-		~BIT(IWL_MVM_CMD_QUEUE));
+		~BIT(cmd_queue));
 }
 
 static inline
-- 
2.14.1