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Re: [Outreachy kernel] [PATCH 5/6] staging: speakup: Avoid multiple assignments on same line

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  Re: [Outreachy kernel] [PATCH 5/6] staging: speakup: Avoid multiple  assignments on same line Julia Lawall <julia.lawall@lip6.fr> - 2017-03-03 19:50 +0100

#1592203 — Re: [Outreachy kernel] [PATCH 5/6] staging: speakup: Avoid multiple assignments on same line

On Sat, 4 Mar 2017, Arushi Singhal wrote:

> This patch fixes the checkpatch.pl warning "multiple assignments
> should be avoided."
>
> Signed-off-by: Arushi Singhal <arushisinghal19971997@gmail.com>
> ---
>  drivers/staging/speakup/main.c | 18 ++++++++++++------
>  1 file changed, 12 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/staging/speakup/main.c b/drivers/staging/speakup/main.c
> index 4c3b5c627718..7915e75664f4 100644
> --- a/drivers/staging/speakup/main.c
> +++ b/drivers/staging/speakup/main.c
> @@ -269,9 +269,12 @@ static unsigned char get_attributes(struct vc_data *vc, u16 *pos)
>
>  static void speakup_date(struct vc_data *vc)
>  {
> -	spk_x = spk_cx = vc->vc_x;
> -	spk_y = spk_cy = vc->vc_y;
> -	spk_pos = spk_cp = vc->vc_pos;
> +	spk_x = vc->vc_x;
> +	spk_cx = vc->vc_x;
> +	spk_y = vc->vc_y;
> +	spk_cy = vc->vc_y;
> +	spk_pos = vc->vc_pos;
> +	spk_cp = vc->vc_pos;
>  	spk_old_attr = spk_attr;
>  	spk_attr = get_attributes(vc, (u_short *)spk_pos);
>  }
> @@ -1643,9 +1646,12 @@ static int speak_highlight(struct vc_data *vc)
>  		spk_do_flush();
>  		spkup_write(speakup_console[vc_num]->ht.highbuf[hc],
>  			    speakup_console[vc_num]->ht.highsize[hc]);
> -		spk_pos = spk_cp = speakup_console[vc_num]->ht.rpos[hc];
> -		spk_x = spk_cx = speakup_console[vc_num]->ht.rx[hc];
> -		spk_y = spk_cy = speakup_console[vc_num]->ht.ry[hc];
> +		spk_pos = speakup_console[vc_num]->ht.rpos[hc];
> +		spk_cp = speakup_console[vc_num]->ht.rpos[hc];
> +		spk_x = speakup_console[vc_num]->ht.rx[hc];
> +		spk_cx = speakup_console[vc_num]->ht.rx[hc];
> +		spk_y = speakup_console[vc_num]->ht.ry[hc];
> +		spk_cy = speakup_console[vc_num]->ht.ry[hc];

It could be better to put eg spk_cp = spk_pos;.  Repeating th big
expression on the right hand side could be error prone in the long term.

julia

>  		return 1;
>  	}
>  	return 0;
> --
> 2.11.0
>
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