From: Johan Hovold johan@kernel.org
commit 8c8b9a9be2afa8bd6a72ad1130532baab9fab89d upstream.
The direction of the pipe argument must match the request-type direction bit or control requests may fail depending on the host-controller-driver implementation.
Fix the control requests which erroneously used usb_rcvctrlpipe().
Fixes: 8466028be792 ("V4L/DVB (8734): Initial support for AME DTV-5100 USB2.0 DVB-T") Cc: stable@vger.kernel.org # 2.6.28 Signed-off-by: Johan Hovold johan@kernel.org Signed-off-by: Hans Verkuil hverkuil-cisco@xs4all.nl Signed-off-by: Mauro Carvalho Chehab mchehab+huawei@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/media/usb/dvb-usb/dtv5100.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-)
--- a/drivers/media/usb/dvb-usb/dtv5100.c +++ b/drivers/media/usb/dvb-usb/dtv5100.c @@ -35,6 +35,7 @@ static int dtv5100_i2c_msg(struct dvb_us u8 *wbuf, u16 wlen, u8 *rbuf, u16 rlen) { struct dtv5100_state *st = d->priv; + unsigned int pipe; u8 request; u8 type; u16 value; @@ -43,6 +44,7 @@ static int dtv5100_i2c_msg(struct dvb_us switch (wlen) { case 1: /* write { reg }, read { value } */ + pipe = usb_rcvctrlpipe(d->udev, 0); request = (addr == DTV5100_DEMOD_ADDR ? DTV5100_DEMOD_READ : DTV5100_TUNER_READ); type = USB_TYPE_VENDOR | USB_DIR_IN; @@ -50,6 +52,7 @@ static int dtv5100_i2c_msg(struct dvb_us break; case 2: /* write { reg, value } */ + pipe = usb_sndctrlpipe(d->udev, 0); request = (addr == DTV5100_DEMOD_ADDR ? DTV5100_DEMOD_WRITE : DTV5100_TUNER_WRITE); type = USB_TYPE_VENDOR | USB_DIR_OUT; @@ -63,7 +66,7 @@ static int dtv5100_i2c_msg(struct dvb_us
memcpy(st->data, rbuf, rlen); msleep(1); /* avoid I2C errors */ - return usb_control_msg(d->udev, usb_rcvctrlpipe(d->udev, 0), request, + return usb_control_msg(d->udev, pipe, request, type, value, index, st->data, rlen, DTV5100_USB_TIMEOUT); } @@ -150,7 +153,7 @@ static int dtv5100_probe(struct usb_inte
/* initialize non qt1010/zl10353 part? */ for (i = 0; dtv5100_init[i].request; i++) { - ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), + ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), dtv5100_init[i].request, USB_TYPE_VENDOR | USB_DIR_OUT, dtv5100_init[i].value,