linux-kernel - Re: [PATCH 1/5] HID: hid-multitouch: fix wrong protocol detection

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Message-ID: <alpine.LNX.2.00.1205101026010.31253@pobox.suse.cz>
Date:	Thu, 10 May 2012 10:31:50 +0200 (CEST)
From:	Jiri Kosina <jkosina@...e.cz>
To:	Henrik Rydberg <rydberg@...omail.se>
Cc:	Benjamin Tissoires <benjamin.tissoires@...il.com>,
	Dmitry Torokhov <dmitry.torokhov@...il.com>,
	Stephane Chatty <chatty@...c.fr>, linux-input@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/5] HID: hid-multitouch: fix wrong protocol detection

On Wed, 9 May 2012, Henrik Rydberg wrote:

> > well, the idea was to keep the memory footprint low. As these values
> > are only needed at init, then I freed them once I finished using them.
> > I can of course skip the pointer, but in that case, wouldn't the
> > struct declaration be worthless?
> 
> My bad, I misread the placement of the free() statement. I was also
> concerned about memory, since HID is big enough a memory hog as it
> is. Barring the added complexity of this patch, it now makes more
> sense.
> 
>     Acked-by: Henrik Rydberg <rydberg@...omail.se>

drivers/hid/hid-multitouch.c: In function ‘mt_post_parse’:
drivers/hid/hid-multitouch.c:673: error: invalid type argument of ‘->’ (have ‘unsigned int’)
make[1]: *** [drivers/hid/hid-multitouch.o] Error 1

I believe that

	td->last_slot_field = f->usages[field_count_per_touch - 1]->hid;

should be

	td->last_slot_field = f->usages[field_count_per_touch - 1];

but I leave this up to you guys to fix.

Thanks,

-- 
Jiri Kosina
SUSE Labs
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