linux-kernel - [PATCH] ACPI: Fix logic for removing mappings in 'acpi

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Date:	Thu, 09 Feb 2012 09:36:41 -0700
From:	Myron Stowe <myron.stowe@...hat.com>
To:	lenb@...nel.org
Cc:	linux-acpi@...r.kernel.org, ying.huang@...el.com,
	tony.luck@...el.com, bhelgaas@...gle.com, trenn@...e.de,
	linux-kernel@...r.kernel.org
Subject: [PATCH] ACPI: Fix logic for removing mappings in 'acpi_unmap'

From: Myron Stowe <mstowe@...hat.com>

Make sure the removal of mappings uses the same logic that put the
mappings in place.

Signed-off-by: Myron Stowe <myron.stowe@...hat.com>
---

 drivers/acpi/osl.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c
index 412a1e0..5aef087 100644
--- a/drivers/acpi/osl.c
+++ b/drivers/acpi/osl.c
@@ -347,7 +347,7 @@ static void acpi_unmap(acpi_physical_address pg_off, void __iomem *vaddr)
 	unsigned long pfn;
 
 	pfn = pg_off >> PAGE_SHIFT;
-	if (page_is_ram(pfn))
+	if (should_use_kmap(pfn))
 		kunmap(pfn_to_page(pfn));
 	else
 		iounmap(vaddr);

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