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iommu/amd: Correct the wrong setting of alias DTE in do_attach 

In below commit alias DTE is set when its peripheral is
setting DTE. However there's a code bug here to wrongly
set the alias DTE, correct it in this patch.

commit e25bfb56ea
Author: Joerg Roedel <jroedel@suse.de>
Date:   Tue Oct 20 17:33:38 2015 +0200

    iommu/amd: Set alias DTE in do_attach/do_detach

Signed-off-by: Baoquan He <bhe@redhat.com>
Tested-by: Mark Hounschell <markh@compro.net>
Cc: stable@vger.kernel.org # v4.4
Signed-off-by: Joerg Roedel <jroedel@suse.de>
steinar/wifi_calib_4_9_kernel
Baoquan He 2016-01-20 22:01:19 +08:00 committed by Joerg Roedel
parent da972fb13b
commit 9b1a12d291
1 changed files with 1 additions and 1 deletions
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2
drivers/iommu/amd_iommu.c
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@ -2049,7 +2049,7 @@ static void do_attach(struct iommu_dev_data *dev_data,
/* Update device table */
set_dte_entry(dev_data->devid, domain, ats);
if (alias != dev_data->devid)
set_dte_entry(dev_data->devid, domain, ats);
set_dte_entry(alias, domain, ats);
device_flush_dte(dev_data);
}