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x86, AMD IOMMU: replace self made size parsing with memparse call

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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>
This commit is contained in:
Joerg Roedel 2008-07-11 17:14:33 +02:00 committed by Ingo Molnar
parent 5dc8bff0f6
commit 0906372e6c
1 changed files with 4 additions and 14 deletions
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18
arch/x86/kernel/amd_iommu_init.c
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@ -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;
}