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

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Message-ID: <alpine.LNX.2.00.1205101136330.31253@pobox.suse.cz>
Date:	Thu, 10 May 2012 11:37:07 +0200 (CEST)
From:	Jiri Kosina <jkosina@...e.cz>
To:	Benjamin Tissoires <benjamin.tissoires@...il.com>
Cc:	Henrik Rydberg <rydberg@...omail.se>,
	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 Thu, 10 May 2012, Benjamin Tissoires 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];
> 
> Ouch, indeed. the "->hid" is extra. When I split the patch 1 and 5, I
> missed that one.
> 
> I tested it without the ->hid, and it's good. Do I need to resend the patch?

No, that's fine, I have fixed that up and applied.

I am not applying the rest of the patchset yet.

-- 
Jiri Kosina
SUSE Labs
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