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iommu/amd: Use standard bitmap operation to set bitmap

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It will be more readable and safer than the old setting.

Signed-off-by: Baoquan He <[email protected]>
Signed-off-by: Joerg Roedel <[email protected]>
This commit is contained in:
Baoquan He 2016-09-15 16:50:51 +08:00 • committed by Joerg Roedel
commit 5c87f62dd1
1 changed files with 2 additions and 1 deletions
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3
drivers/iommu/amd_iommu_init.c
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@ -20,6 +20,7 @@
#include <linux/pci.h>
#include <linux/acpi.h>
#include <linux/list.h>
#include <linux/bitmap.h>
#include <linux/slab.h>
#include <linux/syscore_ops.h>
#include <linux/interrupt.h>
@ -2285,7 +2286,7 @@ static int __init early_amd_iommu_init(void)
* never allocate domain 0 because its used as the non-allocated and
* error value placeholder
*/
amd_iommu_pd_alloc_bitmap[0] = 1;
__set_bit(0, amd_iommu_pd_alloc_bitmap);
spin_lock_init(&amd_iommu_pd_lock);