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iommu/io-pgtable-arm: Use for_each_set_bit to simplify the code

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We can use for_each_set_bit() to simplify the code slightly in the
ARM io-pgtable self tests.

Reviewed-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
This commit is contained in:
Kefeng Wang 2016-09-21 13:41:31 +08:00 committed by Will Deacon
parent a25f0944ba
commit 4ae8a5c528
2 changed files with 2 additions and 8 deletions
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5
drivers/iommu/io-pgtable-arm-v7s.c
View File

@ -793,8 +793,7 @@ static int __init arm_v7s_do_selftests(void)
* Distinct mappings of different granule sizes.
*/
iova = 0;
i = find_first_bit(&cfg.pgsize_bitmap, BITS_PER_LONG);
while (i != BITS_PER_LONG) {
for_each_set_bit(i, &cfg.pgsize_bitmap, BITS_PER_LONG) {
size = 1UL << i;
if (ops->map(ops, iova, iova, size, IOMMU_READ |
IOMMU_WRITE |
@ -811,8 +810,6 @@ static int __init arm_v7s_do_selftests(void)
return __FAIL(ops);
iova += SZ_16M;
i++;
i = find_next_bit(&cfg.pgsize_bitmap, BITS_PER_LONG, i);
loopnr++;
}

5
drivers/iommu/io-pgtable-arm.c
View File

@ -980,8 +980,7 @@ static int __init arm_lpae_run_tests(struct io_pgtable_cfg *cfg)
* Distinct mappings of different granule sizes.
*/
iova = 0;
j = find_first_bit(&cfg->pgsize_bitmap, BITS_PER_LONG);
while (j != BITS_PER_LONG) {
for_each_set_bit(j, &cfg->pgsize_bitmap, BITS_PER_LONG) {
size = 1UL << j;
if (ops->map(ops, iova, iova, size, IOMMU_READ |
@ -999,8 +998,6 @@ static int __init arm_lpae_run_tests(struct io_pgtable_cfg *cfg)
return __FAIL(ops, i);
iova += SZ_1G;
j++;
j = find_next_bit(&cfg->pgsize_bitmap, BITS_PER_LONG, j);
}
/* Partial unmap */