[patch 168/198] IB/mthca: allocate correct number of doorbell pages

[akpm]

From: Roland Dreier <roland@xxxxxxxxxxx>

Doorbell record pages are allocated in HCA page size chunks (always 4096
bytes), so we need to divide by 4096 and not PAGE_SIZE when figuring out how
many pages we'll need space for.

Signed-off-by: Roland Dreier <roland@xxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---

 25-akpm/drivers/infiniband/hw/mthca/mthca_memfree.c |    2 +-
 1 files changed, 1 insertion(+), 1 deletion(-)

diff -puN drivers/infiniband/hw/mthca/mthca_memfree.c~ib-mthca-allocate-correct-number-of-doorbell-pages drivers/infiniband/hw/mthca/mthca_memfree.c
--- 25/drivers/infiniband/hw/mthca/mthca_memfree.c~ib-mthca-allocate-correct-number-of-doorbell-pages	2005-04-12 03:21:43.467528832 -0700
+++ 25-akpm/drivers/infiniband/hw/mthca/mthca_memfree.c	2005-04-12 03:21:43.470528376 -0700
@@ -446,7 +446,7 @@ int mthca_init_db_tab(struct mthca_dev *
 
 	init_MUTEX(&dev->db_tab->mutex);
 
-	dev->db_tab->npages     = dev->uar_table.uarc_size / PAGE_SIZE;
+	dev->db_tab->npages     = dev->uar_table.uarc_size / 4096;
 	dev->db_tab->max_group1 = 0;
 	dev->db_tab->min_group2 = dev->db_tab->npages - 1;
 
_
-
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