linux-kernel - RE: [PATCH 2/2] regmap: Avoid namespace collision within macro

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Date:   Thu, 27 Oct 2016 10:22:01 +0000
From:   Ramesh Shanmugasundaram <ramesh.shanmugasundaram@...renesas.com>
To:     Mark Brown <broonie@...nel.org>
CC:     "mattw@...eaurora.org" <mattw@...eaurora.org>,
        "mitchelh@...eaurora.org" <mitchelh@...eaurora.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-renesas-soc@...r.kernel.org" 
        <linux-renesas-soc@...r.kernel.org>,
        Chris Paterson <Chris.Paterson2@...esas.com>
Subject: RE: [PATCH 2/2] regmap: Avoid namespace collision within macro

> On Thu, Oct 27, 2016 at 10:33:19AM +0100, Ramesh Shanmugasundaram wrote:
> 
> >  #define regmap_read_poll_timeout(map, addr, val, cond, sleep_us,
> > timeout_us) \  ({ \
> > -	ktime_t timeout = ktime_add_us(ktime_get(), timeout_us); \
> > +	ktime_t __timeout = ktime_add_us(ktime_get(), timeout_us); \
> >  	int ret; \
> 
> Why is timeout an issue and not ret?

It is! However, it is less likely for someone to use "ret" as a variable name for the given parameter list. Hence, I fixed timeout alone. Feel free to fix "ret" as well. 

Thanks,
Ramesh