linux-kernel - Re: [PATCH] paride: fix up build warning on mips platforms

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Message-ID: <YcCo8+jTG3b+5GTA@kroah.com>
Date:   Mon, 20 Dec 2021 17:01:55 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     tim@...erelk.net, axboe@...nel.dk
Cc:     linux-block@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] paride: fix up build warning on mips platforms

On Tue, Nov 30, 2021 at 09:46:26AM +0100, Greg Kroah-Hartman wrote:
> MIPS include files define "PC" so when building the paride driver the
> following build warning shows up:
> 
> 	rivers/block/paride/bpck.c:32: warning: "PC" redefined
> 
> Fix this by undefining PC before redefining it as is done for other
> defines in this driver.
> 
> Cc: Tim Waugh <tim@...erelk.net>
> Cc: Jens Axboe <axboe@...nel.dk>
> Cc: linux-block@...r.kernel.org
> Cc: linux-kernel@...r.kernel.org
> Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
> ---
>  drivers/block/paride/bpck.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/block/paride/bpck.c b/drivers/block/paride/bpck.c
> index f5f63ca2889d..d880a9465e9b 100644
> --- a/drivers/block/paride/bpck.c
> +++ b/drivers/block/paride/bpck.c
> @@ -28,6 +28,7 @@
>  
>  #undef r2
>  #undef w2
> +#undef PC
>  
>  #define PC			pi->private
>  #define r2()			(PC=(in_p(2) & 0xff))
> -- 
> 2.34.1
> 

Given the lack of objections to this, I'll just take it through one of
my trees for 5.17-rc1.

thanks,

greg k-h