From 4b96517d7335c2bbed60432713e6d575f3d221f1 Mon Sep 17 00:00:00 2001 From: Brian Norris Date: Tue, 9 Apr 2019 11:49:17 -0700 Subject: Bluetooth: btusb: request wake pin with NOAUTOEN commit 771acc7e4a6e5dba779cb1a7fd851a164bc81033 upstream. Badly-designed systems might have (for example) active-high wake pins that default to high (e.g., because of external pull ups) until they have an active firmware which starts driving it low. This can cause an interrupt storm in the time between request_irq() and disable_irq(). We don't support shared interrupts here, so let's just pre-configure the interrupt to avoid auto-enabling it. Fixes: fd913ef7ce61 ("Bluetooth: btusb: Add out-of-band wakeup support") Fixes: 5364a0b4f4be ("arm64: dts: rockchip: move QCA6174A wakeup pin into its USB node") Signed-off-by: Brian Norris Reviewed-by: Matthias Kaehlcke Signed-off-by: Linus Torvalds Signed-off-by: Greg Kroah-Hartman --- drivers/bluetooth/btusb.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/bluetooth') diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c index 4761499db9ee..470ee68555d9 100644 --- a/drivers/bluetooth/btusb.c +++ b/drivers/bluetooth/btusb.c @@ -2885,6 +2885,7 @@ static int btusb_config_oob_wake(struct hci_dev *hdev) return 0; } + irq_set_status_flags(irq, IRQ_NOAUTOEN); ret = devm_request_irq(&hdev->dev, irq, btusb_oob_wake_handler, 0, "OOB Wake-on-BT", data); if (ret) { @@ -2899,7 +2900,6 @@ static int btusb_config_oob_wake(struct hci_dev *hdev) } data->oob_wake_irq = irq; - disable_irq(irq); bt_dev_info(hdev, "OOB Wake-on-BT configured at IRQ %u", irq); return 0; } -- cgit v1.2.3 From c319d45742d25ecf34bf1fb2c51f304b08b03b2d Mon Sep 17 00:00:00 2001 From: Sean Wang Date: Fri, 15 Feb 2019 07:19:35 +0800 Subject: Bluetooth: mediatek: fix up an error path to restore bdev->tx_state commit 77f328dbc6cf42f22c691a164958a5452142a542 upstream. Restore bdev->tx_state with clearing bit BTMTKUART_TX_WAIT_VND_EVT when there is an error on waiting for the corresponding event. Fixes: 7237c4c9ec92 ("Bluetooth: mediatek: Add protocol support for MediaTek serial devices") Signed-off-by: Sean Wang Signed-off-by: Marcel Holtmann Signed-off-by: Greg Kroah-Hartman --- drivers/bluetooth/btmtkuart.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'drivers/bluetooth') diff --git a/drivers/bluetooth/btmtkuart.c b/drivers/bluetooth/btmtkuart.c index 4593baff2bc9..19eecf198321 100644 --- a/drivers/bluetooth/btmtkuart.c +++ b/drivers/bluetooth/btmtkuart.c @@ -115,11 +115,13 @@ static int mtk_hci_wmt_sync(struct hci_dev *hdev, u8 op, u8 flag, u16 plen, TASK_INTERRUPTIBLE, HCI_INIT_TIMEOUT); if (err == -EINTR) { bt_dev_err(hdev, "Execution of wmt command interrupted"); + clear_bit(BTMTKUART_TX_WAIT_VND_EVT, &bdev->tx_state); return err; } if (err) { bt_dev_err(hdev, "Execution of wmt command timed out"); + clear_bit(BTMTKUART_TX_WAIT_VND_EVT, &bdev->tx_state); return -ETIMEDOUT; } -- cgit v1.2.3