linux-kernel - [ 133/149] Bluetooth: btusb: fix bInterval for high/super speed isochronous endpoints

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Message-Id: <20120330194902.152260940@linuxfoundation.org>
Date:	Fri, 30 Mar 2012 12:50:46 -0700
From:	Greg KH <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:	torvalds@...ux-foundation.org, akpm@...ux-foundation.org,
	alan@...rguk.ukuu.org.uk, Marcel Holtmann <marcel@...tmann.org>,
	Bing Zhao <bzhao@...vell.com>,
	"Gustavo F. Padovan" <padovan@...fusion.mobi>
Subject: [ 133/149] Bluetooth: btusb: fix bInterval for high/super speed isochronous endpoints

3.2-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Bing Zhao <bzhao@...vell.com>

commit fa0fb93f2ac308a76fa64eb57c18511dadf97089 upstream.

For high-speed/super-speed isochronous endpoints, the bInterval
value is used as exponent, 2^(bInterval-1). Luckily we have
usb_fill_int_urb() function that handles it correctly. So we just
call this function to fill in the RX URB.

Cc: Marcel Holtmann <marcel@...tmann.org>
Signed-off-by: Bing Zhao <bzhao@...vell.com>
Acked-by: Marcel Holtmann <marcel@...tmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@...fusion.mobi>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/bluetooth/btusb.c |    9 ++-------
 1 file changed, 2 insertions(+), 7 deletions(-)

--- a/drivers/bluetooth/btusb.c
+++ b/drivers/bluetooth/btusb.c
@@ -507,15 +507,10 @@ static int btusb_submit_isoc_urb(struct
 
 	pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
 
-	urb->dev      = data->udev;
-	urb->pipe     = pipe;
-	urb->context  = hdev;
-	urb->complete = btusb_isoc_complete;
-	urb->interval = data->isoc_rx_ep->bInterval;
+	usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
+				hdev, data->isoc_rx_ep->bInterval);
 
 	urb->transfer_flags  = URB_FREE_BUFFER | URB_ISO_ASAP;
-	urb->transfer_buffer = buf;
-	urb->transfer_buffer_length = size;
 
 	__fill_isoc_descriptor(urb, size,
 			le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));


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