Hi Mauro,
On Tue, 26 Mar 2013 09:04:52 -0300 Mauro Carvalho Chehab <mchehab@xxxxxxxxxx> wrote:
>
> Em Tue, 26 Mar 2013 17:18:47 +1100
> Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx> escreveu:
>
> > After merging the final tree, today's linux-next build (powerpc
> > allyesconfig) failed like this:
> >
> > drivers/staging/media/solo6x10/solo6x10-v4l2-enc.c: In function 'solo_enc_default':
> > drivers/staging/media/solo6x10/solo6x10-v4l2-enc.c:1031:7: error: case label does not reduce to an integer constant
> > drivers/staging/media/solo6x10/solo6x10-v4l2-enc.c:1035:7: error: case label does not reduce to an integer constant
> >
> > I am not sure why this has suddenly appeared, but I have disabled the
> > driver for now using this patch:
>
> Well, solo6x10 didn't use to have its own private ioctl's until now.
> Still, that's strange, as there are other drivers also using vidioc_default.
>
> I suspect that those _IO* have its highest bit equal to 1 on powerpc
> being too big for int. If so, the enclosed patch should fix.
> I'm still wandering why it didn't cause any compilation problems here.
>
> Ok, I didn't try to compile it on powerpc, but still integers have 32
> bits on ppc, right?
yes.
> Anyway, could you please try the enclosed patch?
Doesn't help.
on powerpc, SOLO_IOC_G_MOTION_THRESHOLDS expands to
(((2U) << (((0 +8)+8)+13)) | ((('V')) << (0 +8)) | (((192 +0)) << 0) | (((((sizeof(struct solo_motion_thresholds) == sizeof(struct solo_motion_thresholds[1]) && sizeof(struct solo_motion_thresholds) < (1 << 13)) ? sizeof(struct solo_motion_thresholds) : __invalid_size_argument_for_IOC))) << ((0 +8)+8)))
sizeof(struct solo_motion_thresholds) is 64*64*2 == 8192 which is not
less than 1 << 13
:-(
--
Cheers,
Stephen Rothwell sfr@xxxxxxxxxxxxxxxx
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