Re: [PATCH] allow gpiolib to be a module

From: Jan Beulich
Date: Tue Sep 11 2012 - 03:00:23 EST

>>> On 11.09.12 at 08:17, Ryan Mallon <rmallon@xxxxxxxxx> wrote:
> On 10/09/12 22:16, Jan Beulich wrote:
>> +#ifdef MODULE
>> +int __init gpiolib_init(void)
> Should be static.

Oh, yes, of course.

>> +{
>> + return gpiolib_sysfs_init() ?: gpiolib_debugfs_init();
> I thought this was going to call gpiolib_sysfs_init() twice until I
> looked at gcc's documentation. Maybe the less obtuse, and far more common:
> int err;
> err = gpiolib_sysfs_init();
> if (err)
> return err;
> return gpiolib_debugfs_init();

That construct is being used in many other places throughout
the kernel (including in gpiolib itself), so I don't see why it can't
be used here - the more that it is precisely available to have a
way to avoid the double evaluation.


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