From 0906372e6cf372f3162481f24a0b8ccae0eff4d7 Mon Sep 17 00:00:00 2001
From: Joerg Roedel <joerg.roedel@amd.com>
Date: Fri, 11 Jul 2008 17:14:33 +0200
Subject: [PATCH] x86, AMD IOMMU: replace self made size parsing with memparse
call
This patch replaces the self-made parsing of the amd_iommu_size option with the
generic memparse function call.
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Cc: iommu@lists.linux-foundation.org
Cc: bhavna.sarathy@amd.com
Cc: robert.richter@amd.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
arch/x86/kernel/amd_iommu_init.c | 18 ++++--------------
1 file changed, 4 insertions(+), 14 deletions(-)
diff --git a/arch/x86/kernel/amd_iommu_init.c b/arch/x86/kernel/amd_iommu_init.c
index 2efc3d59b7e60..e0ff9404e6c94 100644
--- a/arch/x86/kernel/amd_iommu_init.c
+++ b/arch/x86/kernel/amd_iommu_init.c
@@ -1042,20 +1042,10 @@ static int __init parse_amd_iommu_options(char *str)
static int __init parse_amd_iommu_size_options(char *str)
{
- for (; *str; ++str) {
- if (strcmp(str, "32M") == 0)
- amd_iommu_aperture_order = 25;
- if (strcmp(str, "64M") == 0)
- amd_iommu_aperture_order = 26;
- if (strcmp(str, "128M") == 0)
- amd_iommu_aperture_order = 27;
- if (strcmp(str, "256M") == 0)
- amd_iommu_aperture_order = 28;
- if (strcmp(str, "512M") == 0)
- amd_iommu_aperture_order = 29;
- if (strcmp(str, "1G") == 0)
- amd_iommu_aperture_order = 30;
- }
+ unsigned order = PAGE_SHIFT + get_order(memparse(str, &str));
+
+ if ((order > 24) && (order < 31))
+ amd_iommu_aperture_order = order;
return 1;
}
--
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