tree 17c3be3e9f9375fd83220d27c1cbed9e730276b4
parent 774cf72f8ad971031428f8057d2947c8780a7b8c
author Andrzej Pietrasiewicz <andrzej.p@samsung.com> 1437724121 +0200
committer Felipe Balbi <balbi@ti.com> 1438010390 -0500

usb: gadget: f_printer: actually limit the number of instances

There is a predefined maximum number of printer instances, currently 4.
A chrdev region is allocated accordingly, but with configfs the user
can create as many printer function directories as they like. To make the
number of printer  instances consistent with the number of allocated
minors, the limit is enforced at directory creation time.

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