From: Sunil V L <sunilvl@ventanamicro.com>
To: linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org,
linux-acpi@vger.kernel.org, linux-pci@vger.kernel.org
Cc: "Catalin Marinas" <catalin.marinas@arm.com>,
"Will Deacon" <will@kernel.org>,
"Paul Walmsley" <paul.walmsley@sifive.com>,
"Palmer Dabbelt" <palmer@dabbelt.com>,
"Albert Ou" <aou@eecs.berkeley.edu>,
"Rafael J . Wysocki" <rafael@kernel.org>,
"Len Brown" <lenb@kernel.org>, "Anup Patel" <anup@brainfault.org>,
"Thomas Gleixner" <tglx@linutronix.de>,
"Bjorn Helgaas" <bhelgaas@google.com>,
"Haibo Xu" <haibo1.xu@intel.com>,
"Conor Dooley" <conor.dooley@microchip.com>,
"Andrew Jones" <ajones@ventanamicro.com>,
"Björn Töpel" <bjorn@kernel.org>, "Marc Zyngier" <maz@kernel.org>,
"Sunil V L" <sunilvl@ventanamicro.com>
Subject: [RFC PATCH v3 05/17] ACPI: irq: Add support for deferred probe in acpi_register_gsi()
Date: Tue, 19 Dec 2023 23:15:14 +0530 [thread overview]
Message-ID: <20231219174526.2235150-6-sunilvl@ventanamicro.com> (raw)
In-Reply-To: <20231219174526.2235150-1-sunilvl@ventanamicro.com>
The chip which provides the GSI support may not be initialized at the
time of acpi_register_gsi(). Return -EPROBE_DEFER to support deferred
probing similar to acpi_irq_get().
This is required to support ResourceSource as supported by ACPI spec for
Interrupt resource.
Signed-off-by: Sunil V L <sunilvl@ventanamicro.com>
---
drivers/acpi/irq.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/acpi/irq.c b/drivers/acpi/irq.c
index b3409e2e2041..c4605fdcda77 100644
--- a/drivers/acpi/irq.c
+++ b/drivers/acpi/irq.c
@@ -52,6 +52,7 @@ EXPORT_SYMBOL_GPL(acpi_gsi_to_irq);
*
* Returns: a valid linux IRQ number on success
* -EINVAL on failure
+ * -EPROBE_DEFER if irqdomain not created yet
*/
int acpi_register_gsi(struct device *dev, u32 gsi, int trigger,
int polarity)
@@ -65,6 +66,9 @@ int acpi_register_gsi(struct device *dev, u32 gsi, int trigger,
return -EINVAL;
}
+ if (!irq_find_matching_fwnode(fwspec.fwnode, DOMAIN_BUS_ANY))
+ return -EPROBE_DEFER;
+
fwspec.param[0] = gsi;
fwspec.param[1] = acpi_dev_get_irq_type(trigger, polarity);
fwspec.param_count = 2;
--
2.39.2
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next prev parent reply other threads:[~2023-12-19 17:46 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-12-19 17:45 [RFC PATCH v3 00/17] RISC-V: ACPI: Add external interrupt controller support Sunil V L
2023-12-19 17:45 ` [RFC PATCH v3 01/17] arm64: PCI: Migrate ACPI related functions to pci-acpi.c Sunil V L
2023-12-19 17:45 ` [RFC PATCH v3 02/17] RISC-V: ACPI: Implement PCI related functionality Sunil V L
2023-12-19 17:45 ` [RFC PATCH v3 03/17] PCI: Make pci_create_root_bus() declare its reliance on MSI domains Sunil V L
2023-12-26 23:56 ` Bjorn Helgaas
2023-12-28 13:08 ` Sunil V L
2023-12-19 17:45 ` [RFC PATCH v3 04/17] ACPI: Add fw_devlink support for ACPI fwnode for IRQ dependency Sunil V L
2023-12-19 17:45 ` Sunil V L [this message]
2023-12-19 17:45 ` [RFC PATCH v3 06/17] pnp.h: Reconfigure IRQ in pnp_irq() to support deferred probe Sunil V L
2023-12-19 17:45 ` [RFC PATCH v3 07/17] ACPI: scan.c: Add weak arch specific function to reorder the IRQCHIP probe Sunil V L
2023-12-19 17:45 ` [RFC PATCH v3 08/17] ACPI: RISC-V: Implement arch function to reorder irqchip probe entries Sunil V L
2023-12-19 17:45 ` [RFC PATCH v3 09/17] irqchip: riscv-intc: Add ACPI support for AIA Sunil V L
2023-12-19 17:45 ` [RFC PATCH v3 10/17] irqchip: riscv-imsic: Add ACPI support Sunil V L
2023-12-19 17:45 ` [RFC PATCH v3 11/17] irqchip: riscv-aplic: " Sunil V L
2023-12-19 17:45 ` [RFC PATCH v3 12/17] irqchip: irq-sifive-plic: " Sunil V L
2023-12-19 17:45 ` [RFC PATCH v3 13/17] ACPI: bus: Add RINTC IRQ model for RISC-V Sunil V L
2023-12-19 17:45 ` [RFC PATCH v3 14/17] ACPI: bus: Add acpi_riscv_init function Sunil V L
2023-12-19 17:45 ` [RFC PATCH v3 15/17] ACPI: RISC-V: Create APLIC platform device Sunil V L
2023-12-19 17:45 ` [RFC PATCH v3 16/17] ACPI: RISC-V: Create PLIC " Sunil V L
2023-12-19 17:45 ` [RFC PATCH v3 17/17] irqchip: riscv-intc: Set ACPI irqmodel Sunil V L
2023-12-19 17:50 ` [RFC PATCH v3 00/17] RISC-V: ACPI: Add external interrupt controller support Rafael J. Wysocki
2023-12-20 3:49 ` Sunil V L
2024-01-30 6:02 ` Sunil V L
2024-02-01 18:10 ` Rafael J. Wysocki
2024-02-02 12:17 ` Sunil V L
2024-03-04 10:20 ` Sunil V L
2024-04-15 15:09 ` Sunil V L
2024-04-15 15:18 ` Rafael J. Wysocki
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