• Hans de Goede's avatar
    Bluetooth: btsdio: Do not bind to non-removable BCM43341 · b4cdaba2
    Hans de Goede authored
    BCM43341 devices soldered onto the PCB (non-removable) always (AFAICT)
    use an UART connection for bluetooth. But they also advertise btsdio
    support on their 3th sdio function, this causes 2 problems:
    
    1) A non functioning BT HCI getting registered
    
    2) Since the btsdio driver does not have suspend/resume callbacks,
    mmc_sdio_pre_suspend will return -ENOSYS, causing mmc_pm_notify()
    to react as if the SDIO-card is removed and since the slot is
    marked as non-removable it will never get detected as inserted again.
    Which results in wifi no longer working after a suspend/resume.
    
    This commit fixes both by making btsdio ignore BCM43341 devices
    when connected to a slot which is marked non-removable.
    
    Cc: stable@vger.kernel.org
    Signed-off-by: default avatarHans de Goede <hdegoede@redhat.com>
    Signed-off-by: default avatarMarcel Holtmann <marcel@holtmann.org>
    b4cdaba2
btsdio.c 8.39 KB