Re: [PATCH] intel-oaktrail: Clean up dead code

From: Andy Shevchenko
Date: Mon Oct 09 2017 - 06:21:23 EST


On Mon, Oct 9, 2017 at 1:57 AM, Christos Gkekas <chris.gekas@xxxxxxxxx> wrote:
> A couple of macros are unused and need to be removed.
> Also variable percent is unsigned so checking whether it is less than
> zero is redundant.

> -#define OT_EC_CAMERA_MASK (1 << 0)
> #define OT_EC_BT_MASK (1 << 1)
> #define OT_EC_GPS_MASK (1 << 2)
> #define OT_EC_WIFI_MASK (1 << 3)
> #define OT_EC_WWAN_MASK (1 << 4)
> -#define OT_EC_TS_MASK (1 << 5)

While they are unused they won't bring any additional code to the binary.
The rationale to leave them is to have a bit descriptions in the code,
so, anyone who is in possession of that old and rare hardware can do
some tests or amendments without searching looking to documentation.


> - if (percent < 0 || percent > OT_EC_BL_BRIGHTNESS_MAX)
> + if (percent > OT_EC_BL_BRIGHTNESS_MAX)
> return -EINVAL;

While it's true, doesn't compiler take care about that?

https://lkml.org/lkml/2006/11/28/206

So, unfortunately I have no reason to take it.

--
With Best Regards,
Andy Shevchenko