On 01/13/2015 12:08 AM, Daniel Vetter wrote: > On Fri, Jan 9, 2015 at 1:50 PM, Jani Nikula <jani.nikula@xxxxxxxxx> wrote: >> I have a slightly uneasy feeling about handing out drm_panel pointers >> (both from here and of_drm_find_panel) without refcounting. If the panel >> driver gets removed, whoever called the find functions will have a >> dangling pointer. I supposed this will be discussed on drm-devel. refcounting does not seems to me a good solution, drm_panel is exposed by device driver and device driver can be unbound unconditionally at any time. This problem affects many frameworks not only drm_panel. I work on resource tracking framework which tries to solve the problem in a generic way[1]. [1]: https://lkml.org/lkml/2014/12/10/342 Regards Andrzej > There's been some discussion already about exactly this problem (but > with drm bridges) with Thierry and some other people. Cc'ed them all > hopefully. Especially when the panel/bridge is a separate driver > there's imo indeed an issue. > -Daniel _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/intel-gfx
