linux-kernel - Re: [PATCH v2] drm/virtio: Fix NULL vs IS_ERR checking in virtio_gpu_object_shmem

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Message-ID: <CAPaKu7She7neKq8c7G1hH4+To=y26dvZ0kP4BfJ4FghFRf+KqA@mail.gmail.com>
Date:   Sat, 11 Jun 2022 21:11:09 -0700
From:   Chia-I Wu <olvaffe@...il.com>
To:     Miaoqian Lin <linmq006@...il.com>
Cc:     David Airlie <airlied@...ux.ie>, Gerd Hoffmann <kraxel@...hat.com>,
        Gurchetan Singh <gurchetansingh@...omium.org>,
        Daniel Vetter <daniel@...ll.ch>,
        ML dri-devel <dri-devel@...ts.freedesktop.org>,
        "open list:VIRTIO CORE, NET AND BLOCK DRIVERS" 
        <virtualization@...ts.linux-foundation.org>,
        open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2] drm/virtio: Fix NULL vs IS_ERR checking in virtio_gpu_object_shmem_init

On Thu, Jun 2, 2022 at 3:42 AM Miaoqian Lin <linmq006@...il.com> wrote:
>
> Since drm_prime_pages_to_sg() function return error pointers.
> The drm_gem_shmem_get_sg_table() function returns error pointers too.
> Using IS_ERR() to check the return value to fix this.
>
> Fixes: 2f2aa13724d5 ("drm/virtio: move virtio_gpu_mem_entry initialization to new function")
> Signed-off-by: Miaoqian Lin <linmq006@...il.com>
> ---
> changes in v2:
> - Update Fixes tag.
> - rebase the working tree.
> v1 Link: https://lore.kernel.org/all/20211222072649.18169-1-linmq006@gmail.com/
Reviewed-by: Chia-I Wu <olvaffe@...il.com>