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Subject[PATCH 4.14 202/496] iwlwifi: mvm: Fix channel switch for count 0 and 1
Date
4.14-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Andrei Otcheretianski <andrei.otcheretianski@intel.com>

[ Upstream commit 40d53f4a60c9eb10d4fa58066c23ba1af8a59e39 ]

It was assumed that apply_time==0 implies immediate scheduling, which is
wrong. Instead, the fw expects the START_IMMEDIATELY flag to be set.
Otherwise, this resulted in 0x3063 assert.
Fix that.
While at it rename the T2_V2_START_IMMEDIATELY to
TE_V2_START_IMMEDIATELY.

Fixes: f5d8f50f271d ("iwlwifi: mvm: Fix channel switch in case of count <= 1")
Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/net/wireless/intel/iwlwifi/fw/api/time-event.h | 4 ++--
drivers/net/wireless/intel/iwlwifi/mvm/time-event.c | 6 ++++--
2 files changed, 6 insertions(+), 4 deletions(-)

--- a/drivers/net/wireless/intel/iwlwifi/fw/api/time-event.h
+++ b/drivers/net/wireless/intel/iwlwifi/fw/api/time-event.h
@@ -211,7 +211,7 @@ enum {
* @TE_V2_NOTIF_HOST_FRAG_END:request/receive notification on frag end
* @TE_V2_NOTIF_INTERNAL_FRAG_START: internal FW use.
* @TE_V2_NOTIF_INTERNAL_FRAG_END: internal FW use.
- * @T2_V2_START_IMMEDIATELY: start time event immediately
+ * @TE_V2_START_IMMEDIATELY: start time event immediately
* @TE_V2_DEP_OTHER: depends on another time event
* @TE_V2_DEP_TSF: depends on a specific time
* @TE_V2_EVENT_SOCIOPATHIC: can't co-exist with other events of tha same MAC
@@ -230,7 +230,7 @@ enum iwl_time_event_policy {
TE_V2_NOTIF_HOST_FRAG_END = BIT(5),
TE_V2_NOTIF_INTERNAL_FRAG_START = BIT(6),
TE_V2_NOTIF_INTERNAL_FRAG_END = BIT(7),
- T2_V2_START_IMMEDIATELY = BIT(11),
+ TE_V2_START_IMMEDIATELY = BIT(11),

/* placement characteristics */
TE_V2_DEP_OTHER = BIT(TE_V2_PLACEMENT_POS),
--- a/drivers/net/wireless/intel/iwlwifi/mvm/time-event.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/time-event.c
@@ -621,7 +621,7 @@ void iwl_mvm_protect_session(struct iwl_
time_cmd.repeat = 1;
time_cmd.policy = cpu_to_le16(TE_V2_NOTIF_HOST_EVENT_START |
TE_V2_NOTIF_HOST_EVENT_END |
- T2_V2_START_IMMEDIATELY);
+ TE_V2_START_IMMEDIATELY);

if (!wait_for_notif) {
iwl_mvm_time_event_send_add(mvm, vif, te_data, &time_cmd);
@@ -814,7 +814,7 @@ int iwl_mvm_start_p2p_roc(struct iwl_mvm
time_cmd.repeat = 1;
time_cmd.policy = cpu_to_le16(TE_V2_NOTIF_HOST_EVENT_START |
TE_V2_NOTIF_HOST_EVENT_END |
- T2_V2_START_IMMEDIATELY);
+ TE_V2_START_IMMEDIATELY);

return iwl_mvm_time_event_send_add(mvm, vif, te_data, &time_cmd);
}
@@ -924,6 +924,8 @@ int iwl_mvm_schedule_csa_period(struct i
time_cmd.interval = cpu_to_le32(1);
time_cmd.policy = cpu_to_le16(TE_V2_NOTIF_HOST_EVENT_START |
TE_V2_ABSENCE);
+ if (!apply_time)
+ time_cmd.policy |= cpu_to_le16(TE_V2_START_IMMEDIATELY);

return iwl_mvm_time_event_send_add(mvm, vif, te_data, &time_cmd);
}

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