On Fri, 2009-12-18 at 14:40 +1100, Benjamin Herrenschmidt wrote:
> On Thu, 2009-12-17 at 16:44 -0800, a...@linux-foundation.org wrote:
> > From: Roel Kluin <roel.kl...@gmail.com>
> > 
> > count is unsigned and cannot be less than 0.
> 
> Is this really a powerpc thing ?
> 
> This driver is only build with CONFIG_HDPU_FEATURES and a git grep
> HDPU_FEATURES returns no Kconfig that defines it :-)
> 
> I'm happy to apply such a trivial thing but it's weird isn't it ?

Ok so it looks like some old stuff that got removed a long time ago and
never made it to arch/powerpc.

I'll send a patch to just remove the whole driver, it's stale.

Cheers,
Ben.

> Cheers,
> Ben.
> 
> > Signed-off-by: Roel Kluin <roel.kl...@gmail.com>
> > Acked-by: Cyrill Gorcunov <gorcu...@gmail.com>
> > Cc: Benjamin Herrenschmidt <b...@kernel.crashing.org>
> > Cc: Kumar Gala <ga...@gate.crashing.org>
> > Cc: Brian Waite <wa...@skycomputers.com>
> > Signed-off-by: Andrew Morton <a...@linux-foundation.org>
> > ---
> > 
> >  drivers/misc/hdpuftrs/hdpu_cpustate.c |    5 -----
> >  1 file changed, 5 deletions(-)
> > 
> > diff -puN 
> > drivers/misc/hdpuftrs/hdpu_cpustate.c~powerpc-sky-cpu-redundant-or-incorrect-tests-on-unsigned
> >  drivers/misc/hdpuftrs/hdpu_cpustate.c
> > --- 
> > a/drivers/misc/hdpuftrs/hdpu_cpustate.c~powerpc-sky-cpu-redundant-or-incorrect-tests-on-unsigned
> > +++ a/drivers/misc/hdpuftrs/hdpu_cpustate.c
> > @@ -121,8 +121,6 @@ static ssize_t cpustate_read(struct file
> >  {
> >     unsigned char data;
> >  
> > -   if (count < 0)
> > -           return -EFAULT;
> >     if (count == 0)
> >             return 0;
> >  
> > @@ -137,9 +135,6 @@ static ssize_t cpustate_write(struct fil
> >  {
> >     unsigned char data;
> >  
> > -   if (count < 0)
> > -           return -EFAULT;
> > -
> >     if (count == 0)
> >             return 0;
> >  
> > _
> 


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