From: Thadeu Lima de Souza Cascardo <cascardo@linux.vnet.ibm.com>
To: linuxppc-dev@lists.ozlabs.org
Cc: paulus@samba.org, shangw@linux.vnet.ibm.com,
Thadeu Lima de Souza Cascardo <cascardo@linux.vnet.ibm.com>,
anton@samba.org
Subject: [PATCH 2/2] ppc/iommu: use find_first_bit to look up entries in the iommu table
Date: Fri, 28 Dec 2012 17:08:52 -0200 [thread overview]
Message-ID: <1356721732-24556-2-git-send-email-cascardo@linux.vnet.ibm.com> (raw)
In-Reply-To: <20121228165504.GC21831@oc0268524204.ibm.com>
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
prev parent reply other threads:[~2012-12-28 19:09 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-12-27 16:28 [PATCH] ppc/iommu: prevent false TCE leak message Thadeu Lima de Souza Cascardo
2012-12-28 5:21 ` Gavin Shan
2012-12-28 16:55 ` Thadeu Lima de Souza Cascardo
2012-12-28 19:08 ` [PATCH 1/2] " Thadeu Lima de Souza Cascardo
2012-12-28 19:08 ` Thadeu Lima de Souza Cascardo [this message]
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