wifi: iwlwifi: mvm: pause TCM on fast resume

Not pausing it means that we can have the TCM work queued into a
non-freezable workqueue, which, in resume, is re-activated before the
driver's resume is called.
The TCM work might send commands to the FW before we resumed the device,
leading to an assert.

Closes: https://lore.kernel.org/linux-wireless/[email protected]/
Tested-by: Chris Bainbridge <[email protected]>
Fixes: e8bb19c ("wifi: iwlwifi: support fast resume")
Reviewed-by: Johannes Berg <[email protected]>
Signed-off-by: Miri Korenblit <[email protected]>
Link: https://patch.msgid.link/20260129212650.05621f3faedb.I44df9cf9183b5143df8078131e0d87c0fd7e1763@changeid

Author: Miriam-Rachel

drivers/net/wireless/intel/iwlwifi/mvm/d3.c

@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
 /*
- * Copyright (C) 2012-2014, 2018-2025 Intel Corporation
+ * Copyright (C) 2012-2014, 2018-2026 Intel Corporation
  * Copyright (C) 2013-2015 Intel Mobile Communications GmbH
  * Copyright (C) 2016-2017 Intel Deutschland GmbH
  */
@@ -3239,6 +3239,8 @@ void iwl_mvm_fast_suspend(struct iwl_mvm *mvm)
 
 	IWL_DEBUG_WOWLAN(mvm, "Starting fast suspend flow\n");
 
+	iwl_mvm_pause_tcm(mvm, true);
+
 	mvm->fast_resume = true;
 	set_bit(IWL_MVM_STATUS_IN_D3, &mvm->status);
 
@@ -3295,6 +3297,8 @@ int iwl_mvm_fast_resume(struct iwl_mvm *mvm)
 		mvm->trans->state = IWL_TRANS_NO_FW;
 	}
 
+	iwl_mvm_resume_tcm(mvm);
+
 out:
 	clear_bit(IWL_MVM_STATUS_IN_D3, &mvm->status);
 	mvm->fast_resume = false;