linux-kernel - Re: [PATCH] drm/hisilicon: Fixed pcie resource conflict using the general API

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Message-ID: <eb8977c8-534b-b183-f3b0-c279ce36f832@suse.de>
Date:   Fri, 21 Feb 2020 09:55:57 +0100
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
Cc:     linuxarm@...wei.com
Subject: Re: [PATCH] drm/hisilicon: Fixed pcie resource conflict using the
 general API

Hi

Am 21.02.20 um 06:55 schrieb Tian Tao:
> the kernel provide the drm_fb_helper_remove_conflicting_pci_framebuffer
> to remvoe the pcie resource conflict,there is no need to driver it again.
> 
> Signed-off-by: Tian Tao <tiantao6@...ilicon.com>
> ---
>  drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c | 22 +++++-----------------
>  1 file changed, 5 insertions(+), 17 deletions(-)
> 
> diff --git a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c
> index 7ebe831..0f7dba7 100644
> --- a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c
> +++ b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c
> @@ -47,22 +47,6 @@ static irqreturn_t hibmc_drm_interrupt(int irq, void *arg)
>  	return IRQ_HANDLED;
>  }
>  
> -static void hibmc_remove_framebuffers(struct pci_dev *pdev)
> -{
> -	struct apertures_struct *ap;
> -
> -	ap = alloc_apertures(1);
> -	if (!ap)
> -		return;
> -
> -	ap->ranges[0].base = pci_resource_start(pdev, 0);
> -	ap->ranges[0].size = pci_resource_len(pdev, 0);
> -
> -	drm_fb_helper_remove_conflicting_framebuffers(ap, "hibmcdrmfb", false);
> -
> -	kfree(ap);
> -}
> -
>  static struct drm_driver hibmc_driver = {
>  	.driver_features	= DRIVER_GEM | DRIVER_MODESET | DRIVER_ATOMIC,
>  	.fops			= &hibmc_fops,
> @@ -343,7 +327,11 @@ static int hibmc_pci_probe(struct pci_dev *pdev,
>  	struct drm_device *dev;
>  	int ret;
>  
> -	hibmc_remove_framebuffers(pdev);
> +	ret = drm_fb_helper_remove_conflicting_pci_framebuffers(pdev,
> +								"hibmcdrmfb");
> +	if (ret)
> +		return ret;
> +
>  

Only one empty line please. With this change

Acked-by: Thomas Zimmermann <tzimmermann@...e.de>


>  	dev = drm_dev_alloc(&hibmc_driver, &pdev->dev);
>  	if (IS_ERR(dev)) {
> 

-- 
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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