From: Johan Hovold johan@kernel.org
commit 92fe35fb9c70a00d8fbbf5bd6172c921dd9c7815 upstream.
The driver was setting the device remote-wakeup feature during probe in violation of the USB specification (which says it should only be set just prior to suspending the device). This could potentially waste power during suspend as well as lead to spurious wakeups.
Note that USB core would clear the remote-wakeup feature at first resume.
Fixes: 3f5429746d91 ("USB: Moschip 7840 USB-Serial Driver") Cc: stable stable@vger.kernel.org # 2.6.19 Reviewed-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Johan Hovold johan@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- drivers/usb/serial/mos7840.c | 5 ----- 1 file changed, 5 deletions(-)
--- a/drivers/usb/serial/mos7840.c +++ b/drivers/usb/serial/mos7840.c @@ -2338,11 +2338,6 @@ out: goto error; } else dev_dbg(&port->dev, "ZLP_REG5 Writing success status%d\n", status); - - /* setting configuration feature to one */ - usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), - 0x03, 0x00, 0x01, 0x00, NULL, 0x00, - MOS_WDR_TIMEOUT); } return 0; error: