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If the device is unused and suspended, a call to open will cause the
device to autoresume through the call to usb_autopm_get_interface().
input_dev->users is already incremented by the input subsystem,
therefore this expression will always be evaluated to true:
if (pegasus->dev->users && usb_submit_urb(pegasus->irq, GFP_NOIO) < 0)
retval = -EIO;
The same URB will then be fail when resubmitted in pegasus_open().
Introduce pegasus->is_open to keep track of the state instead.
Signed-off-by: Marcus Folkesson <marcus.folkesson@gmail.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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