From 43c2e57f94c15744495fee564610aa24602b3824 Mon Sep 17 00:00:00 2001 From: Marcel Holtmann Date: Wed, 4 Feb 2009 17:41:38 +0100 Subject: [PATCH] Bluetooth: Submit bulk URBs along with interrupt URBs Submitting the bulk URBs for ACL data transfers only on demand has no real benefit compared to just submit them when a Bluetooth device gets opened. So when submitting the interrupt URBs for HCI events, just submit the bulk URBs, too. This solves a problem with some Bluetooth USB dongles that has been reported over the last few month. These devices require that the bulk URBs are actually present. These devices are really broken, but there is nothing we can do about it. Signed-off-by: Marcel Holtmann --- drivers/bluetooth/btusb.c | 40 ++++++++++++++++++++++----------------- 1 file changed, 23 insertions(+), 17 deletions(-) diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c index b5fbda6d490a..e70c57ee4221 100644 --- a/drivers/bluetooth/btusb.c +++ b/drivers/bluetooth/btusb.c @@ -35,7 +35,7 @@ #include #include -#define VERSION "0.4" +#define VERSION "0.5" static int ignore_dga; static int ignore_csr; @@ -171,6 +171,7 @@ struct btusb_data { __u8 cmdreq_type; + unsigned int sco_num; int isoc_altsetting; int suspend_count; }; @@ -496,11 +497,23 @@ static int btusb_open(struct hci_dev *hdev) return 0; err = btusb_submit_intr_urb(hdev, GFP_KERNEL); + if (err < 0) + goto failed; + + err = btusb_submit_bulk_urb(hdev, GFP_KERNEL); if (err < 0) { - clear_bit(BTUSB_INTR_RUNNING, &data->flags); - clear_bit(HCI_RUNNING, &hdev->flags); + usb_kill_anchored_urbs(&data->intr_anchor); + goto failed; } + set_bit(BTUSB_BULK_RUNNING, &data->flags); + btusb_submit_bulk_urb(hdev, GFP_KERNEL); + + return 0; + +failed: + clear_bit(BTUSB_INTR_RUNNING, &data->flags); + clear_bit(HCI_RUNNING, &hdev->flags); return err; } @@ -655,19 +668,10 @@ static void btusb_notify(struct hci_dev *hdev, unsigned int evt) BT_DBG("%s evt %d", hdev->name, evt); - if (hdev->conn_hash.acl_num > 0) { - if (!test_and_set_bit(BTUSB_BULK_RUNNING, &data->flags)) { - if (btusb_submit_bulk_urb(hdev, GFP_ATOMIC) < 0) - clear_bit(BTUSB_BULK_RUNNING, &data->flags); - else - btusb_submit_bulk_urb(hdev, GFP_ATOMIC); - } - } else { - clear_bit(BTUSB_BULK_RUNNING, &data->flags); - usb_unlink_anchored_urbs(&data->bulk_anchor); + if (hdev->conn_hash.sco_num != data->sco_num) { + data->sco_num = hdev->conn_hash.sco_num; + schedule_work(&data->work); } - - schedule_work(&data->work); } static int inline __set_isoc_interface(struct hci_dev *hdev, int altsetting) @@ -982,9 +986,11 @@ static int btusb_resume(struct usb_interface *intf) } if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) { - if (btusb_submit_bulk_urb(hdev, GFP_NOIO) < 0) + err = btusb_submit_bulk_urb(hdev, GFP_NOIO); + if (err < 0) { clear_bit(BTUSB_BULK_RUNNING, &data->flags); - else + return err; + } else btusb_submit_bulk_urb(hdev, GFP_NOIO); } -- GitLab