linux-kernel - Re: [PATCH linux-next] drm/i915/request: Remove unused variables

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Date:   Sun, 21 Nov 2021 13:18:09 +0100
From:   Christophe JAILLET <christophe.jaillet@...adoo.fr>
To:     linux-kernel@...r.kernel.org
Cc:     intel-gfx@...ts.freedesktop.org, dri-devel@...ts.freedesktop.org
Subject: Re: [PATCH linux-next] drm/i915/request: Remove unused variables

Le 21/11/2021 à 11:13, cgel.zte@...il.com a écrit :
> From: yong yiran <yong.yiran@....com.cn>
> 
> The clang_analyzer complains as follows:
> drivers/gpu/drm/i915/i915_request.c:2119:2 warning:
> Value stored to 'x' is never read
> 
> Reported-by: Zeal Robot <zealci@....com.cn>
> Signed-off-by: yong yiran <yong.yiran@....com.cn>
> ---
>   drivers/gpu/drm/i915/i915_request.c | 3 ---
>   1 file changed, 3 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/i915_request.c b/drivers/gpu/drm/i915/i915_request.c
> index 820a1f38b271..5e4420f461e9 100644
> --- a/drivers/gpu/drm/i915/i915_request.c
> +++ b/drivers/gpu/drm/i915/i915_request.c
> @@ -2047,7 +2047,6 @@ void i915_request_show(struct drm_printer *m,
>   {
>   	const char *name = rq->fence.ops->get_timeline_name((struct dma_fence *)&rq->fence);
>   	char buf[80] = "";
> -	int x = 0;
>   
>   	/*
>   	 * The prefix is used to show the queue status, for which we use
> @@ -2079,8 +2078,6 @@ void i915_request_show(struct drm_printer *m,
>   	 *      from the lists
>   	 */
>   
> -	x = print_sched_attr(&rq->sched.attr, buf, x, sizeof(buf));
> -

Seriously?

CJ


>   	drm_printf(m, "%s%.*s%c %llx:%lld%s%s %s @ %dms: %s\n",
>   		   prefix, indent, "                ",
>   		   queue_status(rq),
>