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    Subject[ 028/149] cdc-wdm: Dont clear WDM_READ unless entire read buffer is emptied
    3.2-stable review patch.  If anyone has any objections, please let me know.

    ------------------

    From: Ben Hutchings <ben@decadent.org.uk>

    commit b7a205545345578712611106b371538992e142ff upstream.

    The WDM_READ flag is cleared later iff desc->length is reduced to 0.

    Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
    Tested-by: Bjørn Mork <bjorn@mork.no>
    Cc: Oliver Neukum <oliver@neukum.org>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

    ---
    drivers/usb/class/cdc-wdm.c | 1 -
    1 file changed, 1 deletion(-)

    --- a/drivers/usb/class/cdc-wdm.c
    +++ b/drivers/usb/class/cdc-wdm.c
    @@ -457,7 +457,6 @@ retry:
    spin_unlock_irq(&desc->iuspin);
    goto retry;
    }
    - clear_bit(WDM_READ, &desc->flags);
    cntr = desc->length;
    spin_unlock_irq(&desc->iuspin);
    }

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