linux-kernel - Re: [PATCH v2] drm/hisilicon: Add the shutdown for hibmc_pci

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Message-ID: <42a8f817-7319-fe03-1979-1a5a47bbe26e@suse.de>
Date:   Thu, 18 Jun 2020 13:37:17 +0200
From:   Thomas Zimmermann <tzimmermann@...e.de>
To:     Tian Tao <tiantao6@...ilicon.com>, puck.chen@...ilicon.com,
        airlied@...ux.ie, daniel@...ll.ch, kraxel@...hat.com,
        alexander.deucher@....com, tglx@...utronix.de,
        dri-devel@...ts.freedesktop.org, xinliang.liu@...aro.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] drm/hisilicon: Add the shutdown for hibmc_pci_driver

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.

> 
> v2:
> Remove the unnecessary unmap function.
> 
> Signed-off-by: Tian Tao <tiantao6@...ilicon.com>
> Reviewed-by: Sam Ravnborg <sam@...nborg.org>
> ---
>  drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c | 8 +++++++-
>  1 file changed, 7 insertions(+), 1 deletion(-)
> 
> 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 = pdev;
>  	pci_set_drvdata(pdev, dev);
>  
> -	ret = pci_enable_device(pdev);
> +	ret = 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);
>  }
>  
> +static void hibmc_pci_shutdown(struct pci_dev *pdev)
> +{
> +	hibmc_pci_remove(pdev);
> +}
> +
>  static struct pci_device_id hibmc_pci_table[] = {
>  	{ PCI_VDEVICE(HUAWEI, 0x1711) },
>  	{0,}
> @@ -386,6 +391,7 @@ static struct pci_driver hibmc_pci_driver = {
>  	.id_table =	hibmc_pci_table,
>  	.probe =	hibmc_pci_probe,
>  	.remove =	hibmc_pci_remove,
> +	.shutdown =	hibmc_pci_shutdown,
>  	.driver.pm =    &hibmc_pm_ops,
>  };
>  
> 

-- 
Thomas Zimmermann
Graphics Driver Developer
SUSE Software Solutions Germany GmbH
Maxfeldstr. 5, 90409 Nürnberg, Germany
(HRB 36809, AG Nürnberg)
Geschäftsführer: Felix Imendörffer



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