Re: [PATCH] coccinelle: api: detect unnecessary le16_to_cpu

From: Andy Shevchenko
Date: Mon Jul 03 2017 - 12:38:14 EST

On Mon, Jul 3, 2017 at 4:36 PM, Sebastian Reichel
<sebastian.reichel@xxxxxxxxxxxxxxx> wrote:
> On Sat, Jul 01, 2017 at 09:28:10PM +0200, Julia Lawall wrote:

> * drivers/gpio/gpio-pca953x.c (line 190-192)

It has double conversion there:
1. LE CPU: Read as LE and converted to LE (no-op), so, just u16
2. BE CPU: Read as BE and converted to LE, makes it __le16

Looks like the conversion is not needed, only get_unaligned() is necessary.

P.S. What about lines 244-245 there? I think they are no-op.
Interesting that those two parts were added in quite different

With Best Regards,
Andy Shevchenko