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lmedm04: Fix usb_submit_urb BOGUS urb xfer, pipe 1 != type 3 in interrupt urb

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commit 15e1ce3318 upstream.

A quirk of some older firmwares that report endpoint pipe type as PIPE_BULK
but the endpoint otheriwse functions as interrupt.

Check if usb_endpoint_type is USB_ENDPOINT_XFER_BULK and set as usb_rcvbulkpipe.

Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Malcolm Priestley
2015-01-02 10:56:28 -03:00
committed by Greg Kroah-Hartman
parent ea9bc74573
commit 4cf9815137
1 changed files with 7 additions and 0 deletions
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7
drivers/media/usb/dvb-usb-v2/lmedm04.c
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@@ -350,6 +350,7 @@ static int lme2510_int_read(struct dvb_usb_adapter *adap)
{
struct dvb_usb_device *d = adap_to_d(adap);
struct lme2510_state *lme_int = adap_to_priv(adap);
struct usb_host_endpoint *ep;
lme_int->lme_urb = usb_alloc_urb(0, GFP_ATOMIC);
@@ -371,6 +372,12 @@ static int lme2510_int_read(struct dvb_usb_adapter *adap)
adap,
8);
/* Quirk of pipe reporting PIPE_BULK but behaves as interrupt */
ep = usb_pipe_endpoint(d->udev, lme_int->lme_urb->pipe);
if (usb_endpoint_type(&ep->desc) == USB_ENDPOINT_XFER_BULK)
lme_int->lme_urb->pipe = usb_rcvbulkpipe(d->udev, 0xa),
lme_int->lme_urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
usb_submit_urb(lme_int->lme_urb, GFP_ATOMIC);