linux-kernel - Re: [Intel-gfx] [PATCH] drm/i915: Fix an error handling path in igt_write

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Date:   Tue, 18 Jul 2023 14:10:45 +0200
From:   Andrzej Hajda <andrzej.hajda@...el.com>
To:     Christophe JAILLET <christophe.jaillet@...adoo.fr>,
        Jani Nikula <jani.nikula@...ux.intel.com>,
        Joonas Lahtinen <joonas.lahtinen@...ux.intel.com>,
        Rodrigo Vivi <rodrigo.vivi@...el.com>,
        Tvrtko Ursulin <tvrtko.ursulin@...ux.intel.com>,
        David Airlie <airlied@...il.com>,
        Daniel Vetter <daniel@...ll.ch>,
        Matthew Auld <matthew.auld@...el.com>,
        Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>
Cc:     intel-gfx@...ts.freedesktop.org, kernel-janitors@...r.kernel.org,
        linux-kernel@...r.kernel.org, dri-devel@...ts.freedesktop.org
Subject: Re: [Intel-gfx] [PATCH] drm/i915: Fix an error handling path in
 igt_write_huge()

On 17.07.2023 20:49, Christophe JAILLET wrote:
> All error handling paths go to 'out', except this one. Be consistent and
> also branch to 'out' here.
> 
> Fixes: c10a652e239e ("drm/i915/selftests: Rework context handling in hugepages selftests")
> Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>


For me seems correct.

Reviewed-by: Andrzej Hajda <andrzej.hajda@...el.com>

Regards
Andrzej


> ---
> /!\ Speculative /!\
> 
>     This patch is based on analysis of the surrounding code and should be
>     reviewed with care !
> 
>     If the patch is wrong, maybe a comment in the code could explain why.
> 
> /!\ Speculative /!\
> ---
>   drivers/gpu/drm/i915/gem/selftests/huge_pages.c | 6 ++++--
>   1 file changed, 4 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/gem/selftests/huge_pages.c b/drivers/gpu/drm/i915/gem/selftests/huge_pages.c
> index df6c9a84252c..6b9f6cf50bf6 100644
> --- a/drivers/gpu/drm/i915/gem/selftests/huge_pages.c
> +++ b/drivers/gpu/drm/i915/gem/selftests/huge_pages.c
> @@ -1246,8 +1246,10 @@ static int igt_write_huge(struct drm_i915_private *i915,
>   	 * times in succession a possibility by enlarging the permutation array.
>   	 */
>   	order = i915_random_order(count * count, &prng);
> -	if (!order)
> -		return -ENOMEM;
> +	if (!order) {
> +		err = -ENOMEM;
> +		goto out;
> +	}
>   
>   	max_page_size = rounddown_pow_of_two(obj->mm.page_sizes.sg);
>   	max = div_u64(max - size, max_page_size);