Messages in this thread | | | Date | Thu, 17 Sep 2020 15:25:29 +0300 | From | Andy Shevchenko <> | Subject | Re: [RFC PATCH] Add bridge driver to connect sensors to CIO2 device via software nodes on ACPI platforms |
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On Thu, Sep 17, 2020 at 01:49:41PM +0300, Dan Carpenter wrote: > On Thu, Sep 17, 2020 at 01:33:43PM +0300, Sakari Ailus wrote:
> > > + int i, ret; > > > > unsigned int i > > > > Why? > > For list iterators then "int i;" is best... For sizes then unsigned is > sometimes best. Or if it's part of the hardware spec or network spec > unsigned is best. Otherwise unsigned variables cause a ton of bugs. > They're not as intuitive as signed variables. Imagine if there is an > error in this loop and you want to unwind. With a signed variable you > can do: > > while (--i >= 0) > cleanup(&bridge.sensors[i]);
Ha-ha. It's actually a counter argument to your stuff because above is the same as
while (i--) cleanup(&bridge.sensors[i]);
with pretty much unsigned int i.
> There are very few times where raising the type maximum from 2 billion > to 4 billion fixes anything.
-- With Best Regards, Andy Shevchenko
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