From: Joerg Roedel <joerg.roedel@amd.com>
Date: Thu, 2 Jul 2009 16:32:05 +0000 (+0200)
Subject: amd-iommu: set evt_buf_size correctly
X-Git-Tag: v2.6.31-rc3~67^2~1^2
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=1bc6f83813441d15a74dfa97966fb68fa1bdec76;p=karo-tx-linux.git

amd-iommu: set evt_buf_size correctly

The setting of this variable got lost during the suspend/resume
implementation.  But keeping this variable zero causes a divide-by-zero
error in the interrupt handler. This patch fixes this.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
---

diff --git a/arch/x86/kernel/amd_iommu_init.c b/arch/x86/kernel/amd_iommu_init.c
index ec72c7779d6b..c1b17e97252e 100644
--- a/arch/x86/kernel/amd_iommu_init.c
+++ b/arch/x86/kernel/amd_iommu_init.c
@@ -472,6 +472,8 @@ static u8 * __init alloc_event_buffer(struct amd_iommu *iommu)
 	if (iommu->evt_buf == NULL)
 		return NULL;
 
+	iommu->evt_buf_size = EVT_BUFFER_SIZE;
+
 	return iommu->evt_buf;
 }