On Sun, Jan 19, 2014 at 10:05:15PM +0100, Martin Kittel wrote:
> Hi Mauro, hi Sean,
>
> On 01/15/2014 06:59 PM, Mauro Carvalho Chehab wrote:
> > Em Wed, 15 Jan 2014 16:52:45 +0000
> > Sean Young <sean@xxxxxxxx> escreveu:
> >
> >> On Wed, Jan 15, 2014 at 01:49:17PM -0200, Mauro Carvalho Chehab wrote:
> >>> Hi Martin,
> >>>
> >>> Em Wed, 11 Dec 2013 21:34:55 +0100
> >>> Martin Kittel <linux@xxxxxxxxxxxxxxxx> escreveu:
> >>>
> >>>> Hi Mauro, hi Sean,
> >>>>
> >>>> thanks for considering the patch. I have added an updated version at the
> >>>> end of this mail.
> >>>>
> >>>> Regarding the info Sean was requesting, it is indeed an xhci hub. I also
> >>>> added the details of the remote itself.
> >>>>
> >>>> Please let me know if there is anything missing.
> >>>>
> >>>> Best wishes,
> >>>>
> >>>> Martin.
> >>>>
> >>>>
> >>>> lsusb -vvv
> >>>> ------
> >>>> Bus 001 Device 002: ID 2304:0225 Pinnacle Systems, Inc. Remote Kit
> >>>> Infrared Transceiver
> >>>> Device Descriptor:
> >>>> bLength 18
> >>>> bDescriptorType 1
> >>>> bcdUSB 2.00
> >>>> bDeviceClass 0 (Defined at Interface level)
> >>>> bDeviceSubClass 0
> >>>> bDeviceProtocol 0
> >>>> bMaxPacketSize0 8
> >>>> idVendor 0x2304 Pinnacle Systems, Inc.
> >>>> idProduct 0x0225 Remote Kit Infrared Transceiver
> >>>> bcdDevice 0.01
> >>>> iManufacturer 1 Pinnacle Systems
> >>>> iProduct 2 PCTV Remote USB
> >>>> iSerial 5 7FFFFFFFFFFFFFFF
> >>>> bNumConfigurations 1
> >>>> Configuration Descriptor:
> >>>> bLength 9
> >>>> bDescriptorType 2
> >>>> wTotalLength 32
> >>>> bNumInterfaces 1
> >>>> bConfigurationValue 1
> >>>> iConfiguration 3 StandardConfiguration
> >>>> bmAttributes 0xa0
> >>>> (Bus Powered)
> >>>> Remote Wakeup
> >>>> MaxPower 100mA
> >>>> Interface Descriptor:
> >>>> bLength 9
> >>>> bDescriptorType 4
> >>>> bInterfaceNumber 0
> >>>> bAlternateSetting 0
> >>>> bNumEndpoints 2
> >>>> bInterfaceClass 255 Vendor Specific Class
> >>>> bInterfaceSubClass 0
> >>>> bInterfaceProtocol 0
> >>>> iInterface 4 StandardInterface
> >>>> Endpoint Descriptor:
> >>>> bLength 7
> >>>> bDescriptorType 5
> >>>> bEndpointAddress 0x81 EP 1 IN
> >>>> bmAttributes 2
> >>>> Transfer Type Bulk
> >>>> Synch Type None
> >>>> Usage Type Data
> >>>> wMaxPacketSize 0x0040 1x 64 bytes
> >>>> bInterval 10
> >>>
> >>> Hmm... interval is equal to 10, e. g. 125us * 2^(10 - 1) = 64 ms.
> >>>
> >>> I'm wandering why mceusb is just forcing the interval to 1 (125ms). That
> >>> sounds wrong, except, of course, if the endpoint descriptor is wrong.
> >>
> >> Note that the endpoint descriptor describes it as a bulk endpoint, but
> >> it is used as a interrupt endpoint by the driver. For bulk endpoints,
> >> the interval should not be used (?).
> >>
> >> Maybe the correct solution would be to use the endpoints as bulk endpoints
> >> if that is what the endpoint says? mceusb devices come in interrupt and
> >> bulk flavours.
> >
> > Yes, this could be a possible fix.
> >
>
> I have tried this and the driver is working fine without my initial fix.
> I haven't been running with the bulk setting for long, but so far I
> haven't seen the spurious 'xhci_queue_intr_tx: <number> callbacks
> suppressed' messages like I have before.
>
> The current version of the patch against 3.13-rc8 is below.
>
> Please let me know if there is anything else I should check or further
> rework is needed.
>
> Thanks for your help and best wishes,
>
> Martin.
>
> -----------
>
> >From a71676dad29adef9cafb08598e693ec308ba2e95 Mon Sep 17 00:00:00 2001
> From: Martin Kittel <linux@xxxxxxxxxxxxxxxx>
> Date: Sun, 19 Jan 2014 21:24:55 +0100
> Subject: [PATCH] mceusb: use endpoint xfer mode as advertised
>
> mceusb always sets endpoints to interrupt transfer mode no matter
> what the device itself is advertising. This causes trouble on xhci
> hubs. This patch changes the behavior to honor the device endpoint
> settings.
This patch is wrong. I get:
[ 60.962727] ------------[ cut here ]------------
[ 60.962729] WARNING: CPU: 0 PID: 0 at drivers/usb/core/urb.c:452 usb_submit_u
rb+0x1fd/0x5b0()
[ 60.962730] usb 3-2: BOGUS urb xfer, pipe 1 != type 3
This is because the patch no longer sets the endpoints to interrupt
endpoints, but still uses the interrupt functions like
usb_fill_int_urb().
>
> Signed-off-by: Martin Kittel <linux@xxxxxxxxxxxxxxxx>
> ---
> drivers/media/rc/mceusb.c | 51
> ++++++++++++++++++++++++++---------------------
> 1 file changed, 28 insertions(+), 23 deletions(-)
>
> diff --git a/drivers/media/rc/mceusb.c b/drivers/media/rc/mceusb.c
> index a25bb15..67df9a6 100644
> --- a/drivers/media/rc/mceusb.c
> +++ b/drivers/media/rc/mceusb.c
> @@ -1277,32 +1277,37 @@ static int mceusb_dev_probe(struct usb_interface
> *intf,
>
> if ((ep_in == NULL)
> && ((ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
> - == USB_DIR_IN)
> - && (((ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK)
> - == USB_ENDPOINT_XFER_BULK)
> - || ((ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK)
> - == USB_ENDPOINT_XFER_INT))) {
> -
> - ep_in = ep;
> - ep_in->bmAttributes = USB_ENDPOINT_XFER_INT;
> - ep_in->bInterval = 1;
> - mce_dbg(&intf->dev, "acceptable inbound endpoint "
> - "found\n");
> + == USB_DIR_IN)) {
> + if ((ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK)
> + == USB_ENDPOINT_XFER_BULK) {
> + ep_in = ep;
> + mce_dbg(&intf->dev, "acceptable bulk inbound endpoint "
> + "found\n");
> + }
> + if ((ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK)
> + == USB_ENDPOINT_XFER_INT) {
> + ep_in = ep;
> + ep_in->bInterval = 1;
> + mce_dbg(&intf->dev, "acceptable interrupt inbound endpoint "
> + "found\n");
> + }
> }
> -
> if ((ep_out == NULL)
> && ((ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
> - == USB_DIR_OUT)
> - && (((ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK)
> - == USB_ENDPOINT_XFER_BULK)
> - || ((ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK)
> - == USB_ENDPOINT_XFER_INT))) {
> -
> - ep_out = ep;
> - ep_out->bmAttributes = USB_ENDPOINT_XFER_INT;
> - ep_out->bInterval = 1;
> - mce_dbg(&intf->dev, "acceptable outbound endpoint "
> - "found\n");
> + == USB_DIR_OUT)) {
> + if ((ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK)
> + == USB_ENDPOINT_XFER_BULK) {
> + ep_out = ep;
> + mce_dbg(&intf->dev, "acceptable bulk outbound endpoint "
> + "found\n");
> + }
> + if ((ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK)
> + == USB_ENDPOINT_XFER_INT) {
> + ep_out = ep;
> + ep_out->bInterval = 1;
> + mce_dbg(&intf->dev, "acceptable interrupt outbound endpoint "
> + "found\n");
> + }
> }
> }
> if (ep_in == NULL) {
> --
> 1.8.4.rc3
>
>
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