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Commit 2eda66f4 authored by Marcel Holtmann's avatar Marcel Holtmann
Browse files

Bluetooth: Add fine grained mem_flags usage to btusb driver 



The URB submission routines need more fine grained control for the
mem_flags used by kmalloc(), usb_alloc_urb() and usb_submit_urb() to
better support different caller situations. Add a mem_flags parameter
and give the caller full control.

Signed-off-by: default avatarMarcel Holtmann <marcel@holtmann.org>
parent 25f13048

drivers/bluetooth/btusb.c

+17 −17
Original line number Diff line number Diff line
@@ -236,7 +236,7 @@ static void btusb_intr_complete(struct urb *urb) 
	}

}



static int btusb_submit_intr_urb(struct hci_dev *hdev)

static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)

{

	struct btusb_data *data = hdev->driver_data;

	struct urb *urb;
@@ -249,13 +249,13 @@ static int btusb_submit_intr_urb(struct hci_dev *hdev) 
	if (!data->intr_ep)

		return -ENODEV;



	urb = usb_alloc_urb(0, GFP_ATOMIC);

	urb = usb_alloc_urb(0, mem_flags);

	if (!urb)

		return -ENOMEM;



	size = le16_to_cpu(data->intr_ep->wMaxPacketSize);



	buf = kmalloc(size, GFP_ATOMIC);

	buf = kmalloc(size, mem_flags);

	if (!buf) {

		usb_free_urb(urb);

		return -ENOMEM;
@@ -271,7 +271,7 @@ static int btusb_submit_intr_urb(struct hci_dev *hdev) 


	usb_anchor_urb(urb, &data->intr_anchor);



	err = usb_submit_urb(urb, GFP_ATOMIC);

	err = usb_submit_urb(urb, mem_flags);

	if (err < 0) {

		BT_ERR("%s urb %p submission failed (%d)",

						hdev->name, urb, -err);
@@ -319,7 +319,7 @@ static void btusb_bulk_complete(struct urb *urb) 
	}

}



static int btusb_submit_bulk_urb(struct hci_dev *hdev)

static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)

{

	struct btusb_data *data = hdev->driver_data;

	struct urb *urb;
@@ -332,13 +332,13 @@ static int btusb_submit_bulk_urb(struct hci_dev *hdev) 
	if (!data->bulk_rx_ep)

		return -ENODEV;



	urb = usb_alloc_urb(0, GFP_KERNEL);

	urb = usb_alloc_urb(0, mem_flags);

	if (!urb)

		return -ENOMEM;



	size = le16_to_cpu(data->bulk_rx_ep->wMaxPacketSize);



	buf = kmalloc(size, GFP_KERNEL);

	buf = kmalloc(size, mem_flags);

	if (!buf) {

		usb_free_urb(urb);

		return -ENOMEM;
@@ -353,7 +353,7 @@ static int btusb_submit_bulk_urb(struct hci_dev *hdev) 


	usb_anchor_urb(urb, &data->bulk_anchor);



	err = usb_submit_urb(urb, GFP_KERNEL);

	err = usb_submit_urb(urb, mem_flags);

	if (err < 0) {

		BT_ERR("%s urb %p submission failed (%d)",

						hdev->name, urb, -err);
@@ -430,7 +430,7 @@ static void inline __fill_isoc_descriptor(struct urb *urb, int len, int mtu) 
	urb->number_of_packets = i;

}



static int btusb_submit_isoc_urb(struct hci_dev *hdev)

static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)

{

	struct btusb_data *data = hdev->driver_data;

	struct urb *urb;
@@ -443,14 +443,14 @@ static int btusb_submit_isoc_urb(struct hci_dev *hdev) 
	if (!data->isoc_rx_ep)

		return -ENODEV;



	urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_KERNEL);

	urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);

	if (!urb)

		return -ENOMEM;



	size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *

						BTUSB_MAX_ISOC_FRAMES;



	buf = kmalloc(size, GFP_KERNEL);

	buf = kmalloc(size, mem_flags);

	if (!buf) {

		usb_free_urb(urb);

		return -ENOMEM;
@@ -473,7 +473,7 @@ static int btusb_submit_isoc_urb(struct hci_dev *hdev) 


	usb_anchor_urb(urb, &data->isoc_anchor);



	err = usb_submit_urb(urb, GFP_KERNEL);

	err = usb_submit_urb(urb, mem_flags);

	if (err < 0) {

		BT_ERR("%s urb %p submission failed (%d)",

						hdev->name, urb, -err);
@@ -520,7 +520,7 @@ static int btusb_open(struct hci_dev *hdev) 
	if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))

		return 0;



	err = btusb_submit_intr_urb(hdev);

	err = btusb_submit_intr_urb(hdev, GFP_KERNEL);

	if (err < 0) {

		clear_bit(BTUSB_INTR_RUNNING, &data->flags);

		clear_bit(HCI_RUNNING, &hdev->flags);
@@ -734,10 +734,10 @@ static void btusb_work(struct work_struct *work) 


	if (hdev->conn_hash.acl_num > 0) {

		if (!test_and_set_bit(BTUSB_BULK_RUNNING, &data->flags)) {

			if (btusb_submit_bulk_urb(hdev) < 0)

			if (btusb_submit_bulk_urb(hdev, GFP_KERNEL) < 0)

				clear_bit(BTUSB_BULK_RUNNING, &data->flags);

			else

				btusb_submit_bulk_urb(hdev);

				btusb_submit_bulk_urb(hdev, GFP_KERNEL);

		}

	} else {

		clear_bit(BTUSB_BULK_RUNNING, &data->flags);
@@ -754,10 +754,10 @@ static void btusb_work(struct work_struct *work) 
		}



		if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {

			if (btusb_submit_isoc_urb(hdev) < 0)

			if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)

				clear_bit(BTUSB_ISOC_RUNNING, &data->flags);

			else

				btusb_submit_isoc_urb(hdev);

				btusb_submit_isoc_urb(hdev, GFP_KERNEL);

		}

	} else {

		clear_bit(BTUSB_ISOC_RUNNING, &data->flags);