linux-kernel - [BUG] ASoC: nau8821: Found a bug when removing the module

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Date:   Sat, 16 Jul 2022 17:12:38 +0800
From:   Zheyu Ma <zheyuma97@...il.com>
To:     lgirdwood@...il.com, broonie@...nel.org, perex@...ex.cz,
        tiwai@...e.com,
        Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>,
        wtli@...oton.com, steve@....org, Vijendar.Mukunda@....com
Cc:     alsa-devel@...a-project.org,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: [BUG] ASoC: nau8821: Found a bug when removing the module

Hello,

I found a bug in the driver nau8821.

When removing the module, I got a warning:

[   64.226442] nau8821 0-0010: remove
[   64.227621] ------------[ cut here ]------------
[   64.227918] WARNING: CPU: 5 PID: 243 at kernel/irq/devres.c:144
devm_free_irq+0x80/0x8c
[   64.235307] Call trace:
[   64.235501]  devm_free_irq+0x80/0x8c
[   64.235746]  nau8821_i2c_remove+0x28/0x3c [snd_soc_nau8821]
[   64.236982]  i2c_device_remove+0xcc/0xf8
[   64.237173]  device_release_driver_internal+0x208/0x368
[   64.237406]  driver_detach+0xd8/0x12c
[   64.237583]  bus_remove_driver+0x90/0xd0
[   64.237768]  driver_unregister+0x3c/0x6c
[   64.237952]  i2c_del_driver+0x54/0x74
[   64.238127]  cleanup_module+0x1c/0x1d0 [snd_soc_nau8821]

regards,

Zheyu Ma