Bluetooth: btsdio: Do not bind to non-removable BCM43341
authorHans de Goede <hdegoede@redhat.com>
Wed, 29 Nov 2017 19:29:07 +0000 (20:29 +0100)
committerMarcel Holtmann <marcel@holtmann.org>
Tue, 12 Dec 2017 23:28:41 +0000 (00:28 +0100)
commitb4cdaba274247c9c841c6a682c08fa91fb3aa549
tree6c200cb083b7b40cec73f9c55f532cfde15e5a76
parentc23fae11111f4d682dfc5b4dfcdbafc4a096a4b6
Bluetooth: btsdio: Do not bind to non-removable BCM43341

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: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
drivers/bluetooth/btsdio.c