Message ID | 20231025202344.581132-5-sunilvl@ventanamicro.com (mailing list archive) |
---|---|
State | New, archived |
Headers | show
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Wysocki" <rafael@kernel.org>, Len Brown <lenb@kernel.org>, Bjorn Helgaas <bhelgaas@google.com>, Anup Patel <anup@brainfault.org>, Thomas Gleixner <tglx@linutronix.de>, Greg Kroah-Hartman <gregkh@linuxfoundation.org>, Jiri Slaby <jirislaby@kernel.org>, Conor Dooley <conor.dooley@microchip.com>, Andrew Jones <ajones@ventanamicro.com>, Atish Kumar Patra <atishp@rivosinc.com>, Haibo Xu <haibo1.xu@intel.com>, Sunil V L <sunilvl@ventanamicro.com> Subject: [RFC PATCH v2 04/21] ACPI: irq: Add support for deferred probe in acpi_register_gsi() Date: Thu, 26 Oct 2023 01:53:27 +0530 Message-Id: <20231025202344.581132-5-sunilvl@ventanamicro.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20231025202344.581132-1-sunilvl@ventanamicro.com> References: <20231025202344.581132-1-sunilvl@ventanamicro.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20231025_132434_483118_7251DDAC X-CRM114-Status: GOOD ( 14.66 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: <linux-arm-kernel.lists.infradead.org> List-Unsubscribe: <http://lists.infradead.org/mailman/options/linux-arm-kernel>, <mailto:linux-arm-kernel-request@lists.infradead.org?subject=unsubscribe> List-Archive: <http://lists.infradead.org/pipermail/linux-arm-kernel/> List-Post: <mailto:linux-arm-kernel@lists.infradead.org> List-Help: <mailto:linux-arm-kernel-request@lists.infradead.org?subject=help> List-Subscribe: <http://lists.infradead.org/mailman/listinfo/linux-arm-kernel>, <mailto:linux-arm-kernel-request@lists.infradead.org?subject=subscribe> Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" <linux-arm-kernel-bounces@lists.infradead.org> Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org |
Series |
RISC-V: ACPI: Add external interrupt controller support
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diff --git a/drivers/acpi/irq.c b/drivers/acpi/irq.c index 1687483ff319..c06cfc9725cb 100644 --- a/drivers/acpi/irq.c +++ b/drivers/acpi/irq.c @@ -51,19 +51,23 @@ EXPORT_SYMBOL_GPL(acpi_gsi_to_irq); * @polarity: polarity of the GSI to be mapped * * Returns: a valid linux IRQ number on success + * -EPROBE_DEFER if irqdomain is not available. * -EINVAL on failure */ int acpi_register_gsi(struct device *dev, u32 gsi, int trigger, int polarity) { + struct irq_domain *domain; struct irq_fwspec fwspec; unsigned int irq; fwspec.fwnode = acpi_get_gsi_domain_id(gsi); - if (WARN_ON(!fwspec.fwnode)) { - pr_warn("GSI: No registered irqchip, giving up\n"); - return -EINVAL; - } + if (!fwspec.fwnode) + return -EPROBE_DEFER; + + domain = irq_find_matching_fwnode(fwspec.fwnode, DOMAIN_BUS_ANY); + if (!domain) + return -EPROBE_DEFER; fwspec.param[0] = gsi; fwspec.param[1] = acpi_dev_get_irq_type(trigger, polarity);
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(). Signed-off-by: Sunil V L <sunilvl@ventanamicro.com> --- drivers/acpi/irq.c | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-)