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List: linuxppc-embedded
Subject: [PATCH 2/2] ppc/iommu: use find_first_bit to look up entries in the iommu table
From: Thadeu Lima de Souza Cascardo <cascardo () linux ! vnet ! ibm ! com>
Date: 2012-12-28 19:08:52
Message-ID: 1356721732-24556-2-git-send-email-cascardo () linux ! vnet ! ibm ! com
[Download RAW message or body]
Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@linux.vnet.ibm.com>
---
arch/powerpc/kernel/iommu.c | 7 +------
1 files changed, 1 insertions(+), 6 deletions(-)
diff --git a/arch/powerpc/kernel/iommu.c b/arch/powerpc/kernel/iommu.c
index 6d48ff8..91e2b99 100644
--- a/arch/powerpc/kernel/iommu.c
+++ b/arch/powerpc/kernel/iommu.c
@@ -725,14 +725,9 @@ void iommu_free_table(struct iommu_table *tbl, const char *node_name)
clear_bit(0, tbl->it_map);
/* verify that table contains no entries */
- /* it_size is in entries, and we're examining 64 at a time */
- for (i = 0; i < (tbl->it_size/64); i++) {
- if (tbl->it_map[i] != 0) {
+ if (find_first_bit(tbl->it_map, tbl->it_size) < tbl->it_size)
printk(KERN_WARNING "%s: Unexpected TCEs for %s\n",
__func__, node_name);
- break;
- }
- }
/* calculate bitmap size in bytes */
bitmap_sz = (tbl->it_size + 7) / 8;
--
1.7.1
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