[PATCH] ARM: pxafb: Fix access to nonexistent member of pxafb_info
Marek Vasut
marek.vasut at gmail.com
Wed Mar 23 10:54:36 EDT 2011
On Wednesday 23 March 2011 10:15:52 Vasily Khoruzhick wrote:
> On Tuesday 22 March 2011 14:14:14 Marek Vasut wrote:
> > In case CONFIG_FB_PXA_OVERLAY is not defined, the pxafb_freq_transition()
> > function tests nonexistent member of pxafb_info (since the member is not
> > part of the structure).
> > Fix this by wraping the test in ifdef, even if I don't really like how
> > the code looks now. The check doesn't have to happen if overlays are
> > disabled at all as the check is always true then.
>
> Ok, but how you're going to implement it if overlay support is enabled, but
> SoC does not support it?
Implement what ? The member doesn't exist in the structure so it doesn't even
compile with overlays disabled.
>
> > Signed-off-by: Marek Vasut <marek.vasut at gmail.com>
>
> Acked-by: Vasily Khoruzhick <anarsoul at gmail.com>
>
> > ---
> >
> > drivers/video/pxafb.c | 4 +++-
> > 1 files changed, 3 insertions(+), 1 deletions(-)
> >
> > diff --git a/drivers/video/pxafb.c b/drivers/video/pxafb.c
> > index a2e5b51..0f4e8c9 100644
> > --- a/drivers/video/pxafb.c
> > +++ b/drivers/video/pxafb.c
> > @@ -1648,7 +1648,9 @@ pxafb_freq_transition(struct notifier_block *nb,
> > unsigned long val, void *data)
> >
> > switch (val) {
> >
> > case CPUFREQ_PRECHANGE:
> > - if (!fbi->overlay[0].usage && !fbi->overlay[1].usage)
> > +#ifdef CONFIG_FB_PXA_OVERLAY
> > + if (!(fbi->overlay[0].usage || fbi->overlay[1].usage))
> > +#endif
> >
> > set_ctrlr_state(fbi, C_DISABLE_CLKCHANGE);
> >
> > break;
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