linux-kernel - Re: [PATCH] mmc: cavium-thunderx: Use non-hybrid PCI devres API

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Message-ID: <CAPDyKFqqV2VEqi17UHmFE0b9Y+h5q2YaNfHTux8U=7DgF+svEw@mail.gmail.com>
Date: Mon, 28 Apr 2025 18:21:22 +0200
From: Ulf Hansson <ulf.hansson@...aro.org>
To: Philipp Stanner <phasta@...nel.org>
Cc: Robert Richter <rric@...nel.org>, linux-mmc@...r.kernel.org, 
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] mmc: cavium-thunderx: Use non-hybrid PCI devres API

On Thu, 17 Apr 2025 at 11:28, Philipp Stanner <phasta@...nel.org> wrote:
>
> cavium-thunderx enables its PCI device with pcim_enable_device(). This,
> implicitly, switches the function pci_request_regions() into managed
> mode, where it becomes a devres function.
>
> The PCI subsystem wants to remove this hybrid nature from its
> interfaces. To do so, users of the aforementioned combination of
> functions must be ported to non-hybrid functions.
>
> Moreover, since both functions are already managed in this driver, the
> calls to pci_release_regions() are unnecessary.
>
> Remove the calls to pci_release_regions().
>
> Replace the call to sometimes-managed pci_request_regions() with one to
> the always-managed pcim_request_all_regions().
>
> Signed-off-by: Philipp Stanner <phasta@...nel.org>

Applied for next, thanks!

Kind regards
Uffe


> ---
>  drivers/mmc/host/cavium-thunderx.c | 4 +---
>  1 file changed, 1 insertion(+), 3 deletions(-)
>
> diff --git a/drivers/mmc/host/cavium-thunderx.c b/drivers/mmc/host/cavium-thunderx.c
> index 2e2ff984f0b3..1373deb3f531 100644
> --- a/drivers/mmc/host/cavium-thunderx.c
> +++ b/drivers/mmc/host/cavium-thunderx.c
> @@ -72,7 +72,7 @@ static int thunder_mmc_probe(struct pci_dev *pdev,
>         if (ret)
>                 return ret;
>
> -       ret = pci_request_regions(pdev, KBUILD_MODNAME);
> +       ret = pcim_request_all_regions(pdev, KBUILD_MODNAME);
>         if (ret)
>                 return ret;
>
> @@ -164,7 +164,6 @@ static int thunder_mmc_probe(struct pci_dev *pdev,
>                 }
>         }
>         clk_disable_unprepare(host->clk);
> -       pci_release_regions(pdev);
>         return ret;
>  }
>
> @@ -183,7 +182,6 @@ static void thunder_mmc_remove(struct pci_dev *pdev)
>         writeq(dma_cfg, host->dma_base + MIO_EMM_DMA_CFG(host));
>
>         clk_disable_unprepare(host->clk);
> -       pci_release_regions(pdev);
>  }
>
>  static const struct pci_device_id thunder_mmc_id_table[] = {
> --
> 2.48.1
>