linux-kernel - [RFC Patch 04/19] ACPI: Let the parser return false for disabled resources

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Message-Id: <1420684386-5975-5-git-send-email-jiang.liu@linux.intel.com>
Date:	Thu,  8 Jan 2015 10:32:51 +0800
From:	Jiang Liu <jiang.liu@...ux.intel.com>
To:	"Rafael J. Wysocki" <rjw@...ysocki.net>,
	Thomas Gleixner <tglx@...utronix.de>,
	Bjorn Helgaas <bhelgaas@...gle.com>,
	Yinghai Lu <yinghai@...nel.org>,
	Borislav Petkov <bp@...en8.de>, Len Brown <lenb@...nel.org>
Cc:	Tony Luck <tony.luck@...el.com>, x86@...nel.org,
	linux-kernel@...r.kernel.org, linux-pci@...r.kernel.org,
	linux-acpi@...r.kernel.org, Jiang Liu <jiang.liu@...ux.intel.com>
Subject: [RFC Patch 04/19] ACPI: Let the parser return false for disabled resources

From: Thomas Gleixner <tglx@...utronix.de>

If the parser disables a resource during parsing, let it return false,
so the calling code does not need to implement further checks.

Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
Signed-off-by: Jiang Liu <jiang.liu@...ux.intel.com>
---
 drivers/acpi/resource.c |    8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/acpi/resource.c b/drivers/acpi/resource.c
index c0578c05e2c2..deb70a839f80 100644
--- a/drivers/acpi/resource.c
+++ b/drivers/acpi/resource.c
@@ -219,10 +219,10 @@ bool acpi_dev_resource_address_space(struct acpi_resource *ares,
 		res->flags = IORESOURCE_BUS;
 		break;
 	default:
-		res->flags = 0;
+		return false;
 	}
 
-	return true;
+	return !(res->flags & IORESOURCE_DISABLED);
 }
 EXPORT_SYMBOL_GPL(acpi_dev_resource_address_space);
 
@@ -267,10 +267,10 @@ bool acpi_dev_resource_ext_address_space(struct acpi_resource *ares,
 		res->flags = IORESOURCE_BUS;
 		break;
 	default:
-		res->flags = 0;
+		return false;
 	}
 
-	return true;
+	return !(res->flags & IORESOURCE_DISABLED);
 }
 EXPORT_SYMBOL_GPL(acpi_dev_resource_ext_address_space);
 
-- 
1.7.10.4

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