linux-kernel - Re: [PATCH v3 07/15] drm/amdgpu: Use PCI_IRQ_MSI_TYPES where appropriate

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Date:   Tue, 9 Jun 2020 16:23:44 -0400
From:   Alex Deucher <alexdeucher@...il.com>
To:     Piotr Stankiewicz <piotr.stankiewicz@...el.com>
Cc:     Bjorn Helgaas <bhelgaas@...gle.com>,
        Linux PCI <linux-pci@...r.kernel.org>,
        David Airlie <airlied@...ux.ie>,
        Aurabindo Pillai <mail@...abindo.in>,
        LKML <linux-kernel@...r.kernel.org>,
        amd-gfx list <amd-gfx@...ts.freedesktop.org>,
        Maling list - DRI developers 
        <dri-devel@...ts.freedesktop.org>,
        Alex Deucher <alexander.deucher@....com>,
        shaoyunl <shaoyun.liu@....com>, Sam Ravnborg <sam@...nborg.org>,
        Christian König <christian.koenig@....com>,
        Hawking Zhang <Hawking.Zhang@....com>
Subject: Re: [PATCH v3 07/15] drm/amdgpu: Use PCI_IRQ_MSI_TYPES where appropriate

On Tue, Jun 9, 2020 at 5:18 AM Piotr Stankiewicz
<piotr.stankiewicz@...el.com> wrote:
>
> Seeing as there is shorthand available to use when asking for any type
> of interrupt, or any type of message signalled interrupt, leverage it.
>
> Signed-off-by: Piotr Stankiewicz <piotr.stankiewicz@...el.com>
> Reviewed-by: Andy Shevchenko <andriy.shevchenko@...el.com>

Acked-by: Alex Deucher <alexander.deucher@....com>

> ---
>  drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c | 11 +----------
>  1 file changed, 1 insertion(+), 10 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c
> index 0cc4c67f95f7..97141aa81f32 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c
> @@ -248,17 +248,8 @@ int amdgpu_irq_init(struct amdgpu_device *adev)
>         adev->irq.msi_enabled = false;
>
>         if (amdgpu_msi_ok(adev)) {
> -               int nvec = pci_msix_vec_count(adev->pdev);
> -               unsigned int flags;
> -
> -               if (nvec <= 0) {
> -                       flags = PCI_IRQ_MSI;
> -               } else {
> -                       flags = PCI_IRQ_MSI | PCI_IRQ_MSIX;
> -               }
>                 /* we only need one vector */
> -               nvec = pci_alloc_irq_vectors(adev->pdev, 1, 1, flags);
> -               if (nvec > 0) {
> +               if (pci_alloc_irq_vectors(adev->pdev, 1, 1, PCI_IRQ_MSI_TYPES) > 0) {
>                         adev->irq.msi_enabled = true;
>                         dev_dbg(adev->dev, "using MSI/MSI-X.\n");
>                 }
> --
> 2.17.2
>
> _______________________________________________
> dri-devel mailing list
> dri-devel@...ts.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/dri-devel

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