diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/infiniband/hw/mthca/mthca_provider.c | 20 |
1 files changed, 3 insertions, 17 deletions
diff --git a/drivers/infiniband/hw/mthca/mthca_provider.c b/drivers/infiniband/hw/mthca/mthca_provider.c index 6bcde1cb9688..19b7f61cf04c 100644 --- a/drivers/infiniband/hw/mthca/mthca_provider.c +++ b/drivers/infiniband/hw/mthca/mthca_provider.c @@ -923,17 +923,13 @@ static struct ib_mr *mthca_reg_phys_mr(struct ib_pd *pd, struct mthca_mr *mr; u64 *page_list; u64 total_size; - u64 mask; + unsigned long mask; int shift; int npages; int err; int i, j, n; - /* First check that we have enough alignment */ - if ((*iova_start & ~PAGE_MASK) != (buffer_list[0].addr & ~PAGE_MASK)) - return ERR_PTR(-EINVAL); - - mask = 0; + mask = buffer_list[0].addr ^ *iova_start; total_size = 0; for (i = 0; i < num_phys_buf; ++i) { if (i != 0) @@ -947,17 +943,7 @@ static struct ib_mr *mthca_reg_phys_mr(struct ib_pd *pd, if (mask & ~PAGE_MASK) return ERR_PTR(-EINVAL); - /* Find largest page shift we can use to cover buffers */ - for (shift = PAGE_SHIFT; shift < 31; ++shift) - if (num_phys_buf > 1) { - if ((1ULL << shift) & mask) - break; - } else { - if (1ULL << shift >= - buffer_list[0].size + - (buffer_list[0].addr & ((1ULL << shift) - 1))) - break; - } + shift = __ffs(mask | 1 << 31); buffer_list[0].size += buffer_list[0].addr & ((1ULL << shift) - 1); buffer_list[0].addr &= ~0ull << shift; |