USB: option.c: correct DTR behaviour
Setting DTR et al. should work for all interfaces if you actually pass the interface number. :-P This should help with devices that have important pseudo-serial ports that aren't on the first interface in the device. Signed-off-by: NChris Collins <chris@ursys.com.au> Signed-off-by: NMatthias Urlichs <matthias@urlichs.de> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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