linux-kernel - Re: [PATCH v2] m32r: fix build warning about putc

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Date:	Sun, 03 Jul 2016 21:03:40 +0100
From:	Sudip Mukherjee <sudipm.mukherjee@...il.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
CC:	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] m32r: fix build warning about putc

On Sunday 26 June 2016 10:37 PM, Sudip Mukherjee wrote:
> We were getting build warning:
> arch/m32r/boot/compressed/m32r_sio.c:11:13:
>          warning: conflicting types for built-in function 'putc'
>
> Here putc is used as a static function so lets just rename it to avoid
> the conflict with the builtin putc.
>
> Signed-off-by: Sudip Mukherjee <sudip.mukherjee@...ethink.co.uk>
> ---
>
> v1: was having checkpatch warning. My mistake. I removed the braces in
> the while loop.

Hi Andrew,

A gentle ping.
I know its too early for ping but you usually pick up all valid patches 
in a day or two.
Infact, in this patch there is an assignment in the loop condition which 
is not good, so if you want I can send a v3 by changing the loop to a 
do-while loop and thus removing the assignment in the condition.

Regards
Sudip


>
> build log is at:
> https://travis-ci.org/sudipm-mukherjee/parport/jobs/139958498
>
>   arch/m32r/boot/compressed/m32r_sio.c | 9 +++++----
>   1 file changed, 5 insertions(+), 4 deletions(-)
>
> diff --git a/arch/m32r/boot/compressed/m32r_sio.c b/arch/m32r/boot/compressed/m32r_sio.c
> index 01d877c..e5c0c60 100644
> --- a/arch/m32r/boot/compressed/m32r_sio.c
> +++ b/arch/m32r/boot/compressed/m32r_sio.c
> @@ -8,12 +8,13 @@
>
>   #include <asm/processor.h>
>
> -static void putc(char c);
> +static void m32r_putc(char c);
>
>   static int puts(const char *s)
>   {
>   	char c;
> -	while ((c = *s++)) putc(c);
> +	while ((c = *s++))
> +		m32r_putc(c);
>   	return 0;
>   }
>
> @@ -41,7 +42,7 @@ static int puts(const char *s)
>   #define BOOT_SIO0TXB	PLD_ESIO0TXB
>   #endif
>
> -static void putc(char c)
> +static void m32r_putc(char c)
>   {
>   	while ((*BOOT_SIO0STS & 0x3) != 0x3)
>   		cpu_relax();
> @@ -61,7 +62,7 @@ static void putc(char c)
>   #define SIO0TXB	(volatile unsigned short *)(0x00efd000 + 30)
>   #endif
>
> -static void putc(char c)
> +static void m32r_putc(char c)
>   {
>   	while ((*SIO0STS & 0x1) == 0)
>   		cpu_relax();
>