On Wed, 2014-12-03 at 00:33 +0100, Peter Hüwe wrote:
> Am Mittwoch, 3. Dezember 2014, 00:24:43 schrieb Aaro Koskinen:
> > On Wed, Dec 03, 2014 at 12:21:07AM +0100, Peter Hüwe wrote:
> > > --- a/drivers/char/tpm/tpm_i2c_nuvoton.c
> > > +++ b/drivers/char/tpm/tpm_i2c_nuvoton.c
> > > @@ -605,10 +605,8 @@ static int i2c_nuvoton_probe(struct i2c_client
> > > *client,
> > > 
> > >           return -ENODEV;
> > >   
> > >   rc = tpm_chip_register(chip);
> > > 
> > > - if (rc)
> > > -         return rc;
> > > 
> > > - return 0;
> > > + return rc;
> > 
> > Maybe just return tpm_chip_register(chip)?
> 
> Even better.

The pattern:

        foo = bar();
        if (foo)
                return foo;

        return 0;

is fairly common.

There are a few hundred in the kernel.

$ grep-2.5.4 -nrP --include=*.[ch] 
"\b(\w+)\s*=\s*[^;]*;\s*if\s*\(\s*\1\s*\)\s*return\s*\1\s*;\s*return\s*0;" * | \
  grep -oP '^.+:\d+:' | \
  wc -l
308


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