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Message-ID: <20230418210304.GA158193@bhelgaas>
Date: Tue, 18 Apr 2023 16:03:04 -0500
From: Bjorn Helgaas <helgaas@...nel.org>
To: Rob Herring <robh@...nel.org>
Cc: Thierry Reding <thierry.reding@...il.com>,
Lorenzo Pieralisi <lpieralisi@...nel.org>,
Krzysztof WilczyĆski <kw@...ux.com>,
Bjorn Helgaas <bhelgaas@...gle.com>,
Jonathan Hunter <jonathanh@...dia.com>,
Ryder Lee <ryder.lee@...iatek.com>,
Jianjun Wang <jianjun.wang@...iatek.com>,
Tyrel Datwyler <tyreld@...ux.ibm.com>,
Michael Ellerman <mpe@...erman.id.au>,
Nicholas Piggin <npiggin@...il.com>,
Christophe Leroy <christophe.leroy@...roup.eu>,
Matthias Brugger <matthias.bgg@...il.com>,
AngeloGioacchino Del Regno
<angelogioacchino.delregno@...labora.com>,
devicetree@...r.kernel.org, linux-tegra@...r.kernel.org,
linux-pci@...r.kernel.org, linux-kernel@...r.kernel.org,
linux-mediatek@...ts.infradead.org, linuxppc-dev@...ts.ozlabs.org,
linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH] PCI: Use of_property_present() for testing DT property
presence
On Fri, Mar 10, 2023 at 08:47:19AM -0600, Rob Herring wrote:
> It is preferred to use typed property access functions (i.e.
> of_property_read_<type> functions) rather than low-level
> of_get_property/of_find_property functions for reading properties. As
> part of this, convert of_get_property/of_find_property calls to the
> recently added of_property_present() helper when we just want to test
> for presence of a property and nothing more.
>
> Signed-off-by: Rob Herring <robh@...nel.org>
Applied with AngeloGioacchino's reviewed-by to pci/enumeration for
v6.4, thanks!
> ---
> drivers/pci/controller/pci-tegra.c | 4 ++--
> drivers/pci/controller/pcie-mediatek.c | 2 +-
> drivers/pci/hotplug/rpaphp_core.c | 4 ++--
> drivers/pci/of.c | 2 +-
> 4 files changed, 6 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/pci/controller/pci-tegra.c b/drivers/pci/controller/pci-tegra.c
> index 74c109f14ff0..79630885b9c8 100644
> --- a/drivers/pci/controller/pci-tegra.c
> +++ b/drivers/pci/controller/pci-tegra.c
> @@ -1375,7 +1375,7 @@ static int tegra_pcie_phys_get(struct tegra_pcie *pcie)
> struct tegra_pcie_port *port;
> int err;
>
> - if (!soc->has_gen2 || of_find_property(np, "phys", NULL) != NULL)
> + if (!soc->has_gen2 || of_property_present(np, "phys"))
> return tegra_pcie_phys_get_legacy(pcie);
>
> list_for_each_entry(port, &pcie->ports, list) {
> @@ -1944,7 +1944,7 @@ static bool of_regulator_bulk_available(struct device_node *np,
> for (i = 0; i < num_supplies; i++) {
> snprintf(property, 32, "%s-supply", supplies[i].supply);
>
> - if (of_find_property(np, property, NULL) == NULL)
> + if (!of_property_present(np, property))
> return false;
> }
>
> diff --git a/drivers/pci/controller/pcie-mediatek.c b/drivers/pci/controller/pcie-mediatek.c
> index ae5ad05ddc1d..31de7a29192c 100644
> --- a/drivers/pci/controller/pcie-mediatek.c
> +++ b/drivers/pci/controller/pcie-mediatek.c
> @@ -643,7 +643,7 @@ static int mtk_pcie_setup_irq(struct mtk_pcie_port *port,
> return err;
> }
>
> - if (of_find_property(dev->of_node, "interrupt-names", NULL))
> + if (of_property_present(dev->of_node, "interrupt-names"))
> port->irq = platform_get_irq_byname(pdev, "pcie_irq");
> else
> port->irq = platform_get_irq(pdev, port->slot);
> diff --git a/drivers/pci/hotplug/rpaphp_core.c b/drivers/pci/hotplug/rpaphp_core.c
> index 491986197c47..2316de0fd198 100644
> --- a/drivers/pci/hotplug/rpaphp_core.c
> +++ b/drivers/pci/hotplug/rpaphp_core.c
> @@ -278,7 +278,7 @@ int rpaphp_check_drc_props(struct device_node *dn, char *drc_name,
> return -EINVAL;
> }
>
> - if (of_find_property(dn->parent, "ibm,drc-info", NULL))
> + if (of_property_present(dn->parent, "ibm,drc-info"))
> return rpaphp_check_drc_props_v2(dn, drc_name, drc_type,
> be32_to_cpu(*my_index));
> else
> @@ -440,7 +440,7 @@ int rpaphp_add_slot(struct device_node *dn)
> if (!of_node_name_eq(dn, "pci"))
> return 0;
>
> - if (of_find_property(dn, "ibm,drc-info", NULL))
> + if (of_property_present(dn, "ibm,drc-info"))
> return rpaphp_drc_info_add_slot(dn);
> else
> return rpaphp_drc_add_slot(dn);
> diff --git a/drivers/pci/of.c b/drivers/pci/of.c
> index 196834ed44fe..e085f2eca372 100644
> --- a/drivers/pci/of.c
> +++ b/drivers/pci/of.c
> @@ -447,7 +447,7 @@ static int of_irq_parse_pci(const struct pci_dev *pdev, struct of_phandle_args *
> return -ENODEV;
>
> /* Local interrupt-map in the device node? Use it! */
> - if (of_get_property(dn, "interrupt-map", NULL)) {
> + if (of_property_present(dn, "interrupt-map")) {
> pin = pci_swizzle_interrupt_pin(pdev, pin);
> ppnode = dn;
> }
> --
> 2.39.2
>
>
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> linux-arm-kernel@...ts.infradead.org
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