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Message-Id: <20200227132233.680392585@linuxfoundation.org>
Date: Thu, 27 Feb 2020 14:35:43 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-kernel@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
stable@...r.kernel.org, Jerry Snitselaar <jsnitsel@...hat.com>,
Lu Baolu <baolu.lu@...ux.intel.com>,
Joerg Roedel <jroedel@...e.de>
Subject: [PATCH 5.5 006/150] iommu/vt-d: Simplify check in identity_mapping()
From: Joerg Roedel <jroedel@...e.de>
commit 1ddb32da4a629fa7f87873d0b6836c2e1feb7518 upstream.
The function only has one call-site and there it is never called with
dummy or deferred devices. Simplify the check in the function to
account for that.
Fixes: 1ee0186b9a12 ("iommu/vt-d: Refactor find_domain() helper")
Cc: stable@...r.kernel.org # v5.5
Reviewed-by: Jerry Snitselaar <jsnitsel@...hat.com>
Acked-by: Lu Baolu <baolu.lu@...ux.intel.com>
Signed-off-by: Joerg Roedel <jroedel@...e.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
drivers/iommu/intel-iommu.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/iommu/intel-iommu.c
+++ b/drivers/iommu/intel-iommu.c
@@ -2799,7 +2799,7 @@ static int identity_mapping(struct devic
struct device_domain_info *info;
info = dev->archdata.iommu;
- if (info && info != DUMMY_DEVICE_DOMAIN_INFO && info != DEFER_DEVICE_DOMAIN_INFO)
+ if (info)
return (info->domain == si_domain);
return 0;
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