linux-kernel - [RFC PATCH v2 08/21] ACPI: pci_irq: Avoid warning for deferred probe in acpi_pci_irq

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Message-Id: <20231025202344.581132-9-sunilvl@ventanamicro.com>
Date:   Thu, 26 Oct 2023 01:53:31 +0530
From:   Sunil V L <sunilvl@...tanamicro.com>
To:     linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-riscv@...ts.infradead.org, linux-acpi@...r.kernel.org,
        linux-pci@...r.kernel.org, linux-serial@...r.kernel.org
Cc:     Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Palmer Dabbelt <palmer@...belt.com>,
        Albert Ou <aou@...s.berkeley.edu>,
        "Rafael J . Wysocki" <rafael@...nel.org>,
        Len Brown <lenb@...nel.org>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Anup Patel <anup@...infault.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Jiri Slaby <jirislaby@...nel.org>,
        Conor Dooley <conor.dooley@...rochip.com>,
        Andrew Jones <ajones@...tanamicro.com>,
        Atish Kumar Patra <atishp@...osinc.com>,
        Haibo Xu <haibo1.xu@...el.com>,
        Sunil V L <sunilvl@...tanamicro.com>
Subject: [RFC PATCH v2 08/21] ACPI: pci_irq: Avoid warning for deferred probe in acpi_pci_irq_enable()

When the architecture like RISC-V supports deferred GSI interrupt
controller probe,  acpi_register_gsi() can return -EPROBE_DEFER which is
a valid use case to delay the dependent driver probe. So, avoid printing
the warning for the deferred probe case.

Signed-off-by: Sunil V L <sunilvl@...tanamicro.com>
---
 drivers/acpi/pci_irq.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/drivers/acpi/pci_irq.c b/drivers/acpi/pci_irq.c
index ff30ceca2203..f7d0822da08f 100644
--- a/drivers/acpi/pci_irq.c
+++ b/drivers/acpi/pci_irq.c
@@ -452,8 +452,11 @@ int acpi_pci_irq_enable(struct pci_dev *dev)
 
 	rc = acpi_register_gsi(&dev->dev, gsi, triggering, polarity);
 	if (rc < 0) {
-		dev_warn(&dev->dev, "PCI INT %c: failed to register GSI\n",
-			 pin_name(pin));
+		if (rc != -EPROBE_DEFER) {
+			dev_warn(&dev->dev, "PCI INT %c: failed to register GSI\n",
+				 pin_name(pin));
+		}
+
 		kfree(entry);
 		return rc;
 	}
-- 
2.39.2