Re: [PATCH] drivers/input/ff-core.c needs <linux/sched.h>

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On Tue, Jul 01, 2008 at 01:55:25PM +0200, Geert Uytterhoeven wrote:
commit 656acd2bbc4ce7f224de499ee255698701396c48
Author: Dmitry Torokhov <dmitry.torokhov@xxxxxxxxx>
Date:   Thu Jun 26 11:30:02 2008 -0400

    Input: fix locking in force-feedback core

    The newly added event_lock spinlock in the input core disallows sleeping
    and therefore using mutexes in event handlers. Convert force-feedback 
    core to rely on event_lock instead of mutex to protect slots allocated  
    for fore-feedback effects. The original mutex is still used to serialize
    uploading and erasing of effects.

causes the following regression on m68k:

| linux/drivers/input/ff-core.c: In function 'input_ff_upload':
| linux/drivers/input/ff-core.c:172: error: dereferencing pointer to incomplete type
| linux/drivers/input/ff-core.c: In function 'erase_effect':
| linux/drivers/input/ff-core.c:197: error: dereferencing pointer to incomplete type
| linux/drivers/input/ff-core.c:204: error: dereferencing pointer to incomplete type
| make[4]: *** [drivers/input/ff-core.o] Error 1


Argh! Sorry about it.

As the incomplete type is `struct task_struct', including <linux/sched.h> fixes
it.

Not linux/spinlock.h? I wonder if I need to include linux/spinlock.h and
linux/mutex.h directly from linux/input.h... What is the current
policy on headers - do they need to include everything to be
functional or it is responsibility of the user?

-- 
Dmitry
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