This is a note to let you know that I've just added the patch titled Bluetooth: btsdio: Do not bind to non-removable BCM43341 to the 4.15-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: bluetooth-btsdio-do-not-bind-to-non-removable-bcm43341.patch and it can be found in the queue-4.15 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From b4cdaba274247c9c841c6a682c08fa91fb3aa549 Mon Sep 17 00:00:00 2001 From: Hans de Goede <hdegoede@xxxxxxxxxx> Date: Wed, 29 Nov 2017 20:29:07 +0100 Subject: Bluetooth: btsdio: Do not bind to non-removable BCM43341 From: Hans de Goede <hdegoede@xxxxxxxxxx> 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@xxxxxxxxxx> Signed-off-by: Marcel Holtmann <marcel@xxxxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/bluetooth/btsdio.c | 9 +++++++++ 1 file changed, 9 insertions(+) --- 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> @@ -292,6 +293,14 @@ static int btsdio_probe(struct sdio_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; Patches currently in stable-queue which might be from hdegoede@xxxxxxxxxx are queue-4.15/ahci-add-pci-ids-for-intel-bay-trail-cherry-trail-and-apollo-lake-ahci.patch queue-4.15/bluetooth-btsdio-do-not-bind-to-non-removable-bcm43341.patch queue-4.15/hid-quirks-fix-keyboard-touchpad-on-toshiba-click-mini-not-working.patch queue-4.15/ahci-annotate-pci-ids-for-mobile-intel-chipsets-as-such.patch queue-4.15/bluetooth-btusb-restore-qca-rome-suspend-resume-fix-with-a-rewritten-version.patch