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amd-iommu: resume cleanup

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Now that enable_iommus() will call iommu_disable() for each iommu,
the call to disable_iommus() during resume is redundant.  Also, the order
for an invalidation is to invalidate device table entries first, then
domain translations.

Signed-off-by: Chris Wright <chrisw@sous-sol.org>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
This commit is contained in:
Chris Wright 2009-06-16 03:01:37 -04:00 committed by Joerg Roedel
parent 09067207f6
commit 6a047d8b9e
1 changed files with 1 additions and 7 deletions
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8
arch/x86/kernel/amd_iommu_init.c
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@ -1079,12 +1079,6 @@ static void disable_iommus(void)
static int amd_iommu_resume(struct sys_device *dev)
{
/*
* Disable IOMMUs before reprogramming the hardware registers.
* IOMMU is still enabled from the resume kernel.
*/
disable_iommus();
/* re-load the hardware */
enable_iommus();
@ -1092,8 +1086,8 @@ static int amd_iommu_resume(struct sys_device *dev)
* we have to flush after the IOMMUs are enabled because a
* disabled IOMMU will never execute the commands we send
*/
amd_iommu_flush_all_domains();
amd_iommu_flush_all_devices();
amd_iommu_flush_all_domains();
return 0;
}