tree 9da4e112a1794dd00c7a8ceb3890b8378d28e700
parent 636bc0ed271d996e18365345e9c00fc712edc610
author Andrzej Pietrasiewicz <andrzej.p@samsung.com> 1425376346 +0100
committer Felipe Balbi <balbi@ti.com> 1426019619 -0500

usb: gadget: printer: allocate printer_dev instances dynamically

With all the obstacles removed it is possible to allow more than one
instance of the printer function. Since the function requires allocating
character device region, a maximum number of allowed instances is defined.
Such an approach is used in f_acm and in f_hid.
With multiple instances it does not make sense to depend on a
lock_printer_io member of a dynamically allocated (and destroyed) struct
printer_dev to clean up after all instances of the printer function.

Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>