diff options
| author | A Sun <as1033x@comcast.net> | 2017-03-26 21:33:07 +0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@s-opensource.com> | 2017-06-06 14:29:54 +0300 |
| commit | 8e175b22e8640bf3a58e071af54190b909e4a944 (patch) | |
| tree | 5d518adc51b810471a79ce2c1cb2d9788901fa85 /drivers/media | |
| parent | 1656df35d689ac6a93d7503725d9e62ce50c7f38 (diff) | |
| download | linux-8e175b22e8640bf3a58e071af54190b909e4a944.tar.xz | |
[media] mceusb: sporadic RX truncation corruption fix
Intermittent RX truncation and loss of IR received data. This resulted
in receive stream synchronization errors where driver attempted to
incorrectly parse IR data (eg 0x90 below) as command response.
[ 3969.139898] mceusb 1-1.2:1.0: processed IR data
[ 3969.151315] mceusb 1-1.2:1.0: rx data: 00 90 (length=2)
[ 3969.151321] mceusb 1-1.2:1.0: Unknown command 0x00 0x90
[ 3969.151336] mceusb 1-1.2:1.0: rx data: 98 0a 8d 0a 8e 0a 8e 0a 8e 0a 8e 0a 9a 0a 8e 0a 0b 3a 8e 00 80 41 59 00 00 (length=25)
[ 3969.151341] mceusb 1-1.2:1.0: Raw IR data, 24 pulse/space samples
[ 3969.151348] mceusb 1-1.2:1.0: Storing space with duration 500000
Bug trigger appears to be normal, but heavy, IR receiver use.
Signed-off-by: A Sun <as1033x@comcast.net>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Diffstat (limited to 'drivers/media')
| -rw-r--r-- | drivers/media/rc/mceusb.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/drivers/media/rc/mceusb.c b/drivers/media/rc/mceusb.c index 93b16fe3ab38..e05fed2aaaa9 100644 --- a/drivers/media/rc/mceusb.c +++ b/drivers/media/rc/mceusb.c @@ -1337,8 +1337,13 @@ static int mceusb_dev_probe(struct usb_interface *intf, goto rc_dev_fail; /* wire up inbound data handler */ - usb_fill_int_urb(ir->urb_in, dev, pipe, ir->buf_in, maxp, - mceusb_dev_recv, ir, ep_in->bInterval); + if (usb_endpoint_xfer_int(ep_in)) + usb_fill_int_urb(ir->urb_in, dev, pipe, ir->buf_in, maxp, + mceusb_dev_recv, ir, ep_in->bInterval); + else + usb_fill_bulk_urb(ir->urb_in, dev, pipe, ir->buf_in, maxp, + mceusb_dev_recv, ir); + ir->urb_in->transfer_dma = ir->dma_in; ir->urb_in->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; |