diff options
| author | Hans de Goede <hdegoede@redhat.com> | 2017-11-29 20:29:07 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-02-16 20:09:46 +0100 |
| commit | 727b1a6e72e4daa18daad0f3e862c60470df3dd0 (patch) | |
| tree | 08bb7ec876e3fdd83844c43fd681fb5f3425a48c /drivers/bluetooth/btsdio.c | |
| parent | 24346d134b2d00408a1ba1400e0d32dab64d7e5c (diff) | |
Bluetooth: btsdio: Do not bind to non-removable BCM43341
commit b4cdaba274247c9c841c6a682c08fa91fb3aa549 upstream.
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.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/bluetooth/btsdio.c')
| -rw-r--r-- | drivers/bluetooth/btsdio.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/bluetooth/btsdio.c b/drivers/bluetooth/btsdio.c index 7b624423a7e8..89ccb604045c 100644 --- a/drivers/bluetooth/btsdio.c +++ b/drivers/bluetooth/btsdio.c @@ -31,6 +31,7 @@ #include <linux/errno.h> #include <linux/skbuff.h> +#include <linux/mmc/host.h> #include <linux/mmc/sdio_ids.h> #include <linux/mmc/sdio_func.h> @@ -291,6 +292,14 @@ static int btsdio_probe(struct sdio_func *func, tuple = tuple->next; } + /* BCM43341 devices soldered onto the PCB (non-removable) use an + * uart connection for bluetooth, ignore the BT SDIO interface. + */ + if (func->vendor == SDIO_VENDOR_ID_BROADCOM && + func->device == SDIO_DEVICE_ID_BROADCOM_43341 && + !mmc_card_is_removable(func->card->host)) + return -ENODEV; + data = devm_kzalloc(&func->dev, sizeof(*data), GFP_KERNEL); if (!data) return -ENOMEM; |