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Subject: Linking issue with THINKPAD_ACPI=y and ALSA subsystem
From: Marcel Holtmann <marcel@holtmann.org>
To: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Cc: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
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Date: Thu, 17 Dec 2009 18:35:06 -0800
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Hi Henrique,

so I am seeing the current issue when building 2.6.33-rc1 for a X200
machine:

drivers/built-in.o: In function `volume_alsa_notify_change':
thinkpad_acpi.c:(.text+0x16c135): undefined reference to `snd_ctl_notify'
thinkpad_acpi.c:(.text+0x16c14f): undefined reference to `snd_ctl_notify'
drivers/built-in.o: In function `volume_exit':
thinkpad_acpi.c:(.text+0x17000a): undefined reference to `snd_card_free'
drivers/built-in.o: In function `volume_init':
thinkpad_acpi.c:(.init.text+0xa05c): undefined reference to `snd_card_create'
thinkpad_acpi.c:(.init.text+0xa170): undefined reference to `snd_ctl_new1'
thinkpad_acpi.c:(.init.text+0xa17f): undefined reference to `snd_ctl_add'
thinkpad_acpi.c:(.init.text+0xa1a3): undefined reference to `snd_ctl_new1'
thinkpad_acpi.c:(.init.text+0xa1b2): undefined reference to `snd_ctl_add'
thinkpad_acpi.c:(.init.text+0xa1f0): undefined reference to `snd_card_register'
thinkpad_acpi.c:(.init.text+0xa200): undefined reference to `snd_card_free'
drivers/built-in.o:(.devinit.data+0xfb8): undefined reference to `snd_ctl_boolean_mono_info'

I do have THINKPAD_ACPI=y in my configuration and CONFIG_SND=m.

Regards

Marcel