[PATCH] iommu/io-pgtable-arm: Using for_each_set_bit to simplify the code
Kefeng Wang
wangkefeng.wang at huawei.com
Tue Sep 20 22:41:31 PDT 2016
Using for_each_set_bit() to simplify the code.
Signed-off-by: Kefeng Wang <wangkefeng.wang at huawei.com>
---
drivers/iommu/io-pgtable-arm-v7s.c | 5 +----
drivers/iommu/io-pgtable-arm.c | 5 +----
2 files changed, 2 insertions(+), 8 deletions(-)
diff --git a/drivers/iommu/io-pgtable-arm-v7s.c b/drivers/iommu/io-pgtable-arm-v7s.c
index def8ca1..f23821b 100644
--- a/drivers/iommu/io-pgtable-arm-v7s.c
+++ b/drivers/iommu/io-pgtable-arm-v7s.c
@@ -789,8 +789,7 @@ 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 |
@@ -807,8 +806,6 @@ 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++;
}
diff --git a/drivers/iommu/io-pgtable-arm.c b/drivers/iommu/io-pgtable-arm.c
index f5c90e1..8c3dfb7 100644
--- a/drivers/iommu/io-pgtable-arm.c
+++ b/drivers/iommu/io-pgtable-arm.c
@@ -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 */
--
1.7.12.4
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