Re: [PATCH 5.15.y] wifi: ath10k: avoid NULL pointer error during sdio remove

[Sasha Levin <sashal@kernel.org>]

[ Sasha's backport helper bot ]

Hi,

✅ All tests passed successfully. No issues detected.
No action required from the submitter.

The upstream commit SHA1 provided is correct: 95c38953cb1ecf40399a676a1f85dfe2b5780a9a

WARNING: Author mismatch between patch and upstream commit:
Backport author: alvalan9@foxmail.com
Commit author: Kang Yang<quic_kangyang@quicinc.com>

Status in newer kernel trees:
6.13.y | Present (exact SHA1)
6.12.y | Present (different SHA1: 543c0924d446)
6.6.y | Present (different SHA1: b35de9e01fc7)
6.1.y | Present (different SHA1: 6e5dbd1c04ab)

Note: The patch differs from the upstream commit:
---
1:  95c38953cb1ec ! 1:  4bc5b99f1591d wifi: ath10k: avoid NULL pointer error during sdio remove
    @@ Metadata
      ## Commit message ##
         wifi: ath10k: avoid NULL pointer error during sdio remove
     
    +    [ Upstream commit 95c38953cb1ecf40399a676a1f85dfe2b5780a9a ]
    +
         When running 'rmmod ath10k', ath10k_sdio_remove() will free sdio
         workqueue by destroy_workqueue(). But if CONFIG_INIT_ON_FREE_DEFAULT_ON
         is set to yes, kernel panic will happen:
    @@ Commit message
         Reviewed-by: David Ruth <druth@chromium.org>
         Link: https://patch.msgid.link/20241008022246.1010-1-quic_kangyang@quicinc.com
         Signed-off-by: Jeff Johnson <quic_jjohnson@quicinc.com>
    +    Signed-off-by: Alva Lan <alvalan9@foxmail.com>
     
      ## drivers/net/wireless/ath/ath10k/sdio.c ##
     @@
       * Copyright (c) 2004-2011 Atheros Communications Inc.
       * Copyright (c) 2011-2012,2017 Qualcomm Atheros, Inc.
       * Copyright (c) 2016-2017 Erik Stromdahl <erik.stromdahl@gmail.com>
    -- * Copyright (c) 2022-2023 Qualcomm Innovation Center, Inc. All rights reserved.
     + * Copyright (c) 2022-2024 Qualcomm Innovation Center, Inc. All rights reserved.
       */
      
---

Results of testing on various branches:

| Branch                    | Patch Apply | Build Test |
|---------------------------|-------------|------------|
| stable/linux-5.15.y       |  Success    |  Success   |