Hallo David, Am 25.02.2011 00:36, schrieb David Cohen: > On Mon, Feb 21, 2011 at 2:21 PM, Felipe Balbi <balbi@xxxxxx> wrote: >> On Mon, Feb 21, 2011 at 02:09:07PM +0200, David Cohen wrote: >>> On Mon, Feb 21, 2011 at 9:36 AM, Felipe Balbi <balbi@xxxxxx> wrote: >>>> Hi, >>>> >>>> On Sat, Feb 19, 2011 at 06:04:58PM +0200, David Cohen wrote: >>>>>> I have to disagree. The fundamental problem is the circular dependency >>>>>> between those two files: >>>>>> >>>>>> sched.h uses wait_queue_head_t defined in wait.h >>>>>> wait.h uses TASK_* defined in sched.h >>>>>> >>>>>> So, IMO the real fix would be clear out the circular dependency. Maybe >>>>>> introducing <linux/task.h> to define those TASK_* symbols and include >>>>>> that on sched.h and wait.h >>>>>> >>>>>> Just dig a quick and dirty to try it out and works like a charm >>>>> We have 2 problems: >>>>> - omap24xxcam compilation broken >>>>> - circular dependency between sched.h and wait.h >>>>> >>>>> To fix the broken compilation we can do what the rest of the kernel is >>>>> doing, which is to include sched.h. >>>>> Then, the circular dependency is fixed by some different approach >>>>> which would probably change *all* current usage of TASK_*. >>>> considering that 1 is caused by 2 I would fix 2. >>>> >>>>> IMO, there's no need to create a dependency between those issues. >>>> There's no dependency between them, it's just that the root cause for >>>> this problem is a circular dependency between wait.h and sched.h >>> I did a try to fix this circular dependency and the comment I got was >>> to include sched.h in omap24xxcam.c file: >>> http://marc.info/?l=linux-omap&m=129828637120270&w=2 >>> >>> I'm working to remove v4l2 internal device interface from omap24xxcam >>> and then I need this driver's compilation fixed. >>> The whole kernel is including sched.h when wake_up*() macro is used, >>> so this should be our first solution IMO. >>> As I said earlier, no need to make this compilation fix be dependent >>> of wait.h fix (if it's really going to be changed). >>> >>> I think we should proceed with this patch. >> I would wait to hear from Ingo or Peter who are the maintainers for that >> part, but fine by me. > How about to proceed with this patch? > > Regards, > > David > I got a message that the patch is queued at http://git.linuxtv.org/media_tree.git for_v2.6.39 Thanks Mauro. Thomas -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
