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Subject: Re: [PATCH v2] drm/hisilicon: Add the shutdown for hibmc_pci_driver
To:     Tian Tao <tiantao6@hisilicon.com>, puck.chen@hisilicon.com,
        airlied@linux.ie, daniel@ffwll.ch, kraxel@redhat.com,
        alexander.deucher@amd.com, tglx@linutronix.de,
        dri-devel@lists.freedesktop.org, xinliang.liu@linaro.org,
        linux-kernel@vger.kernel.org
References: <1586998974-24234-1-git-send-email-tiantao6@hisilicon.com>
From:   Thomas Zimmermann <tzimmermann@suse.de>
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Date:   Thu, 18 Jun 2020 13:37:17 +0200
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From: Thomas Zimmermann <tzimmermann@suse.de>
To: Tian Tao <tiantao6@hisilicon.com>, puck.chen@hisilicon.com,
 airlied@linux.ie, daniel@ffwll.ch, kraxel@redhat.com,
 alexander.deucher@amd.com, tglx@linutronix.de,
 dri-devel@lists.freedesktop.org, xinliang.liu@linaro.org,
 linux-kernel@vger.kernel.org
Message-ID: <42a8f817-7319-fe03-1979-1a5a47bbe26e@suse.de>
Subject: Re: [PATCH v2] drm/hisilicon: Add the shutdown for hibmc_pci_driver
References: <1586998974-24234-1-git-send-email-tiantao6@hisilicon.com>
In-Reply-To: <1586998974-24234-1-git-send-email-tiantao6@hisilicon.com>

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Hi

Am 16.04.20 um 03:02 schrieb Tian Tao:
> add the shutdown function to release the resource.

Why is this necessary for hibmc? The other PCI drivers don't require a
shutdown method.

>=20
> v2:
> Remove the unnecessary unmap function.
>=20
> Signed-off-by: Tian Tao <tiantao6@hisilicon.com>
> Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
> ---
>  drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c | 8 +++++++-
>  1 file changed, 7 insertions(+), 1 deletion(-)
>=20
> diff --git a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c b/drivers/=
gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c
> index a6fd0c2..0250a10 100644
> --- a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c
> +++ b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c
> @@ -337,7 +337,7 @@ static int hibmc_pci_probe(struct pci_dev *pdev,
>  	dev->pdev =3D pdev;
>  	pci_set_drvdata(pdev, dev);
> =20
> -	ret =3D pci_enable_device(pdev);
> +	ret =3D pcim_enable_device(pdev);

This probably makes sense.

Best regards
Thomas

>  	if (ret) {
>  		DRM_ERROR("failed to enable pci device: %d\n", ret);
>  		goto err_free;
> @@ -376,6 +376,11 @@ static void hibmc_pci_remove(struct pci_dev *pdev)=

>  	drm_dev_put(dev);
>  }
> =20
> +static void hibmc_pci_shutdown(struct pci_dev *pdev)
> +{
> +	hibmc_pci_remove(pdev);
> +}
> +
>  static struct pci_device_id hibmc_pci_table[] =3D {
>  	{ PCI_VDEVICE(HUAWEI, 0x1711) },
>  	{0,}
> @@ -386,6 +391,7 @@ static struct pci_driver hibmc_pci_driver =3D {
>  	.id_table =3D	hibmc_pci_table,
>  	.probe =3D	hibmc_pci_probe,
>  	.remove =3D	hibmc_pci_remove,
> +	.shutdown =3D	hibmc_pci_shutdown,
>  	.driver.pm =3D    &hibmc_pm_ops,
>  };
> =20
>=20

--=20
Thomas Zimmermann
Graphics Driver Developer
SUSE Software Solutions Germany GmbH
Maxfeldstr. 5, 90409 N=C3=BCrnberg, Germany
(HRB 36809, AG N=C3=BCrnberg)
Gesch=C3=A4ftsf=C3=BChrer: Felix Imend=C3=B6rffer


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