From nobody Fri Dec 19 12:53:23 2025 Received: from mail-pl1-f172.google.com (mail-pl1-f172.google.com [209.85.214.172]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id D26E639860 for ; Tue, 19 Dec 2023 17:46:03 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=ventanamicro.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=ventanamicro.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=ventanamicro.com header.i=@ventanamicro.com header.b="KFyKhop7" Received: by mail-pl1-f172.google.com with SMTP id d9443c01a7336-1d3e6c86868so4411625ad.1 for ; Tue, 19 Dec 2023 09:46:03 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ventanamicro.com; s=google; t=1703007963; x=1703612763; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=rIbnDt1gfwHKXHRoQ8BCVk+wpgvY6XHWajEKia0uA/M=; b=KFyKhop7ECu5rw/sSYQbgCww+757PQ6kmfPwXm9c3sIQAiByCy9xjewSl3U0abbDs2 emwje+crxrvSWMjCcECMri3HMpotwQ3hXHv2AG5D6EOnj92L/q+XFryw2lyFxX9m2CL+ Cm8UoXhbLnimyWTgwSzJeNv5T7a94AcdBw0GW2cqEdJaMbzIQmiffk/C8yN2gF8kmvqn Ksxt8llKwdbOTxu/TMgiAtEFPZmiNQZ/hLn67dSC3bRWg19ZighYK/4PDc5sBbKj8dJZ cHa5ntKhTvEIqiez/TePaWu/v7nq5NG4RENhAq1SkVRCmn0J/ZKfKN8lE5g8f9LJ/VLi wpqw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1703007963; x=1703612763; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=rIbnDt1gfwHKXHRoQ8BCVk+wpgvY6XHWajEKia0uA/M=; b=XV6/Y/NDsdZz3YWx2siQ5PrH98oLWXGv9VuIlFnk+jOIcF/TPuKR460pVR4DoUku2f nAVfTh+uub9abTCcDkv+EryiYsH4IzpAKBiE0lgApF2F5NGcZ5OzQbn1099JFH2q+fcK CvM8hjkhMwVHEj0qFRFzUhBIwzUxNbCZRwBlZqyvP96cWA4ziL6HjEzYEpcqtsJ9jLoq t8dBe03JVUQVIAFQ/+2/310Tnw+2+qUHjqK97ELQsRryWN67VwFfB0RuESYaBQLQZe80 Y5ViIX5qM2DNzh4+krfv8GX7Rmp0BszV7IgNUGCSnXdXv1chCL65LLRDX9hw5gdrDl+Y y6Dw== X-Gm-Message-State: AOJu0YzmcwGMb8Ojxc2nsDy6sarAd6GGcEi/Ere4bRn7XQ25vyvTKG8I McV45s2Va+e8Wpw8SuyN2TBKhQ== X-Google-Smtp-Source: AGHT+IHoJyst8qKxevbQtQHjUD2Bmcj6vMHRjagPkED1xi9g/ptnAuHzMtmh5nHrJpPdrkAYQWohig== X-Received: by 2002:a17:903:28f:b0:1d3:d8e5:9e38 with SMTP id j15-20020a170903028f00b001d3d8e59e38mr2543797plr.2.1703007963429; Tue, 19 Dec 2023 09:46:03 -0800 (PST) Received: from sunil-pc.Dlink ([106.51.188.200]) by smtp.gmail.com with ESMTPSA id n16-20020a170903111000b001d3320f6143sm14453015plh.269.2023.12.19.09.45.58 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 19 Dec 2023 09:46:03 -0800 (PST) From: Sunil V L 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 , Will Deacon , Paul Walmsley , Palmer Dabbelt , Albert Ou , "Rafael J . Wysocki" , Len Brown , Anup Patel , Thomas Gleixner , Bjorn Helgaas , Haibo Xu , Conor Dooley , Andrew Jones , =?UTF-8?q?Bj=C3=B6rn=20T=C3=B6pel?= , Marc Zyngier , Sunil V L 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 Message-Id: <20231219174526.2235150-6-sunilvl@ventanamicro.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20231219174526.2235150-1-sunilvl@ventanamicro.com> References: <20231219174526.2235150-1-sunilvl@ventanamicro.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" 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 --- 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 tr= igger, return -EINVAL; } =20 + if (!irq_find_matching_fwnode(fwspec.fwnode, DOMAIN_BUS_ANY)) + return -EPROBE_DEFER; + fwspec.param[0] =3D gsi; fwspec.param[1] =3D acpi_dev_get_irq_type(trigger, polarity); fwspec.param_count =3D 2; --=20 2.39.2