linux-kernel - Re: [PATCH v2 0/2] Avoid namespace collision within macros & tidyup

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Date:   Wed, 14 Jun 2017 07:48:14 +0100
From:   Ian Arkver <ian.arkver.dev@...il.com>
To:     Ramesh Shanmugasundaram <ramesh.shanmugasundaram@...renesas.com>,
        broonie@...nel.org, hverkuil@...all.nl, mattw@...eaurora.org,
        mitchelh@...eaurora.org, akpm@...ux-foundation.org,
        yamada.masahiro@...ionext.com
Cc:     linux-renesas-soc@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-media@...r.kernel.org, chris.paterson2@...esas.com
Subject: Re: [PATCH v2 0/2] Avoid namespace collision within macros & tidyup

On 13/06/17 14:33, Ramesh Shanmugasundaram wrote:
> Hi All,
> 
> The readx_poll_timeout & similar macros defines local variable that can
> cause name space collision with the caller. Fixed this issue by prefixing
> them with underscores.

The compound statement has a local variable scope, so these won't 
collide with the caller I believe.

> Also tidied couple of instances where the macro
> arguments are used in expressions without paranthesis.
> 
> This patchset is based on top of today's linux-next repo.
> commit bc4c75f41a1c ("Add linux-next specific files for 20170613")
> 
> Change history:
> 
> v2:
>   - iopoll.h:
> 	- Enclosed timeout_us & sleep_us arguments with paranthesis
>   - regmap.h:
> 	- Enclosed timeout_us & sleep_us arguments with paranthesis
> 	- Renamed pollret to __ret
> 
> Note: timeout_us cause spare check warning as identified here [1].
> 
> [1] https://www.mail-archive.com/linux-renesas-soc@vger.kernel.org/msg15138.html
> 
> Thanks,
> Ramesh
> 
> Ramesh Shanmugasundaram (2):
>    iopoll: Avoid namespace collision within macros & tidyup
>    regmap: Avoid namespace collision within macro & tidyup
> 
>   include/linux/iopoll.h | 12 +++++++-----
>   include/linux/regmap.h | 17 +++++++++--------
>   2 files changed, 16 insertions(+), 13 deletions(-)
>