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qcacld-3.0: Pause Tx when bus suspend in progress

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In SAP due to intrabss forwarding, Tx ring update is going through
when WOW enable command has been sent to FW. This results in crash.
To fix this, set is_tx_pause flag when suspend sequence starts,
which will pause Tx ring HP update.

Change-Id: I81f25b8bfca917c95180c460fd932c0f75094c10
CRs-Fixed: 3295428
This commit is contained in:
Ananya Gupta 2022-09-23 09:31:28 +05:30 • committed by Rahul Choudhary
commit 007fd08652
2 changed files with 7 additions and 2 deletions
Download patch file Download diff file Expand all files Collapse all files

4
core/dp/txrx3.0/dp_txrx.h
View file

@ -1,5 +1,6 @@
/*
* Copyright (c) 2017-2021 The Linux Foundation. All rights reserved.
* Copyright (c) 2023 Qualcomm Innovation Center, Inc. All rights reserved.
*
* Permission to use, copy, modify, and/or distribute this software for
* any purpose with or without fee is hereby granted, provided that the
@ -202,6 +203,8 @@ static inline QDF_STATUS dp_txrx_resume(ol_txrx_soc_handle soc)
goto ret;
}
cdp_set_tx_pause(soc, false);
refill_thread = &dp_ext_hdl->refill_thread;
if (refill_thread->enabled) {
qdf_status = dp_rx_refill_thread_resume(refill_thread);
@ -248,6 +251,7 @@ static inline QDF_STATUS dp_txrx_suspend(ol_txrx_soc_handle soc)
if (QDF_IS_STATUS_ERROR(qdf_status) && refill_thread->enabled)
dp_rx_refill_thread_resume(refill_thread);
cdp_set_tx_pause(soc, true);
ret:
return qdf_status;
}

5
core/hdd/src/wlan_hdd_tx_rx.c
View file

@ -1,6 +1,6 @@
/*
* Copyright (c) 2012-2021 The Linux Foundation. All rights reserved.
* Copyright (c) 2021-2022 Qualcomm Innovation Center, Inc. All rights reserved.
* Copyright (c) 2021-2023 Qualcomm Innovation Center, Inc. All rights reserved.
*
* Permission to use, copy, modify, and/or distribute this software for
* any purpose with or without fee is hereby granted, provided that the
@ -1029,7 +1029,8 @@ static void __hdd_hard_start_xmit(struct sk_buff *skb,
if (wlan_hdd_validate_context(hdd_ctx))
goto drop_pkt;
if (hdd_ctx->hdd_wlan_suspended) {
if (qdf_unlikely(!hdd_ctx || hdd_ctx->hdd_wlan_suspended ||
hdd_ctx->hdd_wlan_suspend_in_progress)) {
hdd_err_rl("Device is system suspended, drop pkt");
goto drop_pkt;
}