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

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

Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
This commit is contained in:
YueHaibing 2018-04-26 12:49:29 +08:00 committed by Joerg Roedel
parent 6da6c0db53
commit f793b13ef0
2 changed files with 2 additions and 8 deletions
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5
drivers/iommu/io-pgtable-arm-v7s.c
View File

@ -898,8 +898,7 @@ static int __init arm_v7s_do_selftests(void)
/* Full unmap */ /* Full unmap */
iova = 0; iova = 0;
i = find_first_bit(&cfg.pgsize_bitmap, BITS_PER_LONG); for_each_set_bit(i, &cfg.pgsize_bitmap, BITS_PER_LONG) {
while (i != BITS_PER_LONG) {
size = 1UL << i; size = 1UL << i;
if (ops->unmap(ops, iova, size) != size) if (ops->unmap(ops, iova, size) != size)
@ -916,8 +915,6 @@ static int __init arm_v7s_do_selftests(void)
return __FAIL(ops); return __FAIL(ops);
iova += SZ_16M; iova += SZ_16M;
i++;
i = find_next_bit(&cfg.pgsize_bitmap, BITS_PER_LONG, i);
} }
free_io_pgtable_ops(ops); free_io_pgtable_ops(ops);

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

@ -1120,8 +1120,7 @@ static int __init arm_lpae_run_tests(struct io_pgtable_cfg *cfg)
/* Full unmap */ /* Full unmap */
iova = 0; iova = 0;
j = find_first_bit(&cfg->pgsize_bitmap, BITS_PER_LONG); for_each_set_bit(j, &cfg->pgsize_bitmap, BITS_PER_LONG) {
while (j != BITS_PER_LONG) {
size = 1UL << j; size = 1UL << j;
if (ops->unmap(ops, iova, size) != size) if (ops->unmap(ops, iova, size) != size)
@ -1138,8 +1137,6 @@ static int __init arm_lpae_run_tests(struct io_pgtable_cfg *cfg)
return __FAIL(ops, i); return __FAIL(ops, i);
iova += SZ_1G; iova += SZ_1G;
j++;
j = find_next_bit(&cfg->pgsize_bitmap, BITS_PER_LONG, j);
} }
free_io_pgtable_ops(ops); free_io_pgtable_ops(ops);