This is a note to let you know that I've just added the patch titled
wifi: iwlwifi: mvm: pause TCM when the firmware is stopped
to the 5.15-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
wifi-iwlwifi-mvm-pause-tcm-when-the-firmware-is-stop.patch
and it can be found in the queue-5.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit f0b98a80530a1ac99e549869bdfb60de4f1c831c
Author: Emmanuel Grumbach <emmanuel.grumbach@xxxxxxxxx>
Date: Sun Aug 25 19:17:10 2024 +0300
wifi: iwlwifi: mvm: pause TCM when the firmware is stopped
[ Upstream commit 0668ebc8c2282ca1e7eb96092a347baefffb5fe7 ]
Not doing so will make us send a host command to the transport while the
firmware is not alive, which will trigger a WARNING.
bad state = 0
WARNING: CPU: 2 PID: 17434 at drivers/net/wireless/intel/iwlwifi/iwl-trans.c:115 iwl_trans_send_cmd+0x1cb/0x1e0 [iwlwifi]
RIP: 0010:iwl_trans_send_cmd+0x1cb/0x1e0 [iwlwifi]
Call Trace:
<TASK>
iwl_mvm_send_cmd+0x40/0xc0 [iwlmvm]
iwl_mvm_config_scan+0x198/0x260 [iwlmvm]
iwl_mvm_recalc_tcm+0x730/0x11d0 [iwlmvm]
iwl_mvm_tcm_work+0x1d/0x30 [iwlmvm]
process_one_work+0x29e/0x640
worker_thread+0x2df/0x690
? rescuer_thread+0x540/0x540
kthread+0x192/0x1e0
? set_kthread_struct+0x90/0x90
ret_from_fork+0x22/0x30
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@xxxxxxxxx>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@xxxxxxxxx>
Link: https://patch.msgid.link/20240825191257.5abe71ca1b6b.I97a968cb8be1f24f94652d9b110ecbf6af73f89e@changeid
Signed-off-by: Johannes Berg <johannes.berg@xxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/ops.c b/drivers/net/wireless/intel/iwlwifi/mvm/ops.c
index 0b0022dabc7bc..e2c244ceaf706 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/ops.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/ops.c
@@ -1018,6 +1018,8 @@ void iwl_mvm_stop_device(struct iwl_mvm *mvm)
clear_bit(IWL_MVM_STATUS_FIRMWARE_RUNNING, &mvm->status);
+ iwl_mvm_pause_tcm(mvm, false);
+
iwl_fw_dbg_stop_sync(&mvm->fwrt);
iwl_trans_stop_device(mvm->trans);
iwl_free_fw_paging(&mvm->fwrt);
