linux-kernel - [PATCH v3 3/5] x86/ioapic: Fix setup

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Date:	Wed, 10 Aug 2016 12:01:56 +0800
From:	Rui Wang <rui.y.wang@...el.com>
To:	helgaas@...nel.org, tglx@...utronix.de, rjw@...ysocki.net
Cc:	tony.luck@...el.com, bhelgaas@...gle.com,
	linux-acpi@...r.kernel.org, linux-pci@...r.kernel.org,
	linux-kernel@...r.kernel.org, rui.y.wang@...el.com
Subject: [PATCH v3 3/5] x86/ioapic: Fix setup_res() failing to get resource

acpi_dev_filter_resource_type() returns 0 on success, and 1 on failure.
A return value of zero means there's a matching resource, so we should
continue within setup_res() to get the resource.

Signed-off-by: Rui Wang <rui.y.wang@...el.com>
---
 drivers/acpi/ioapic.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/acpi/ioapic.c b/drivers/acpi/ioapic.c
index 2449377..8ab6d42 100644
--- a/drivers/acpi/ioapic.c
+++ b/drivers/acpi/ioapic.c
@@ -46,7 +46,7 @@ static acpi_status setup_res(struct acpi_resource *acpi_res, void *data)
 	struct resource_win win;
 
 	res->flags = 0;
-	if (acpi_dev_filter_resource_type(acpi_res, IORESOURCE_MEM) == 0)
+	if (acpi_dev_filter_resource_type(acpi_res, IORESOURCE_MEM))
 		return AE_OK;
 
 	if (!acpi_dev_resource_memory(acpi_res, res)) {
-- 
1.8.3.1