volume_set_software_mute 7584 drivers/platform/x86/thinkpad_acpi.c 		if (volume_set_software_mute(false) < 0)
volume_set_software_mute 7790 drivers/platform/x86/thinkpad_acpi.c 	if (software_mute_requested && volume_set_software_mute(true) == 0) {