Hi Jiri On Tue, Jan 7, 2014 at 1:11 PM, Jiri Kosina <jkosina@xxxxxxx> wrote: > On Fri, 27 Dec 2013, David Herrmann wrote: > >> >> I also haven't figured out a nice way to make HID-core honor the >> >> "size" parameter. hid-input depends on getting the whole >> >> input-report. >> > >> > I think this needs clearly fixing. >> >> And we have a volunteer, yippie! ;) >> >> I think hid_input_report() in hid-core.c is the only place that relies >> on this. Maybe it really is easier to fix it. But I am not even >> slightly familiar with that code. So if no-one of the HID core >> developers steps up to fix it, we should take the transport-driver >> fixes instead. As nearly all transport-drivers are affected by this, >> maybe we should even move this buffer into hid_device and provide >> hid_input_truncated_report() which does this. >> >> Anyhow, waiting for Jiri's comments on this. > > Hmm, this is really unfortunate situation. > > I am now looking into making hid_input_report() honor 'size' properly, but > no matter how it'll be done in the end, it'll absolutely not be a simple > 'fix'. So definitely can be done for 3.15 or so, but not as a fix for > current kernels. > > So doing kzalloc(rsize, GFP_ATOMIC) in the HID-core for now, and copying > the buffer around, seems like only viable solution for now, with the > outlook of removing this ugliness once hid-core honors 'size' properly. Should I resend the patches and move it to hid_input_report() for now? Or are you getting something in yourself? Given the amount of reports on the list and bugzilla, I think we should get this fix in asap. We can always fix it properly in -next. Thanks David > I will keep looking into this and maybe some easy way how to hack this > together will materialize, but I don't currently see it. > > Hmm ... > > -- > Jiri Kosina > SUSE Labs -- To unsubscribe from this list: send the line "unsubscribe linux-input" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
