linux-kernel - [PATCH 10/12] iommu/amd: Initialize amd_iommu_last_bdf for DEV

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Date:	Tue, 20 Oct 2015 17:33:43 +0200
From:	Joerg Roedel <joro@...tes.org>
To:	iommu@...ts.linux-foundation.org
Cc:	linux-kernel@...r.kernel.org, Joerg Roedel <jroedel@...e.de>
Subject: [PATCH 10/12] iommu/amd: Initialize amd_iommu_last_bdf for DEV_ALL

From: Joerg Roedel <jroedel@...e.de>

Also initialize the amd_iommu_last_bdf variable when a
IVHD_DEV_ALL entry is found in the ACPI table.

Signed-off-by: Joerg Roedel <jroedel@...e.de>
---
 drivers/iommu/amd_iommu_init.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/iommu/amd_iommu_init.c b/drivers/iommu/amd_iommu_init.c
index 2f7fb1e..6432bdb 100644
--- a/drivers/iommu/amd_iommu_init.c
+++ b/drivers/iommu/amd_iommu_init.c
@@ -441,6 +441,10 @@ static int __init find_last_devid_from_ivhd(struct ivhd_header *h)
 	while (p < end) {
 		dev = (struct ivhd_entry *)p;
 		switch (dev->type) {
+		case IVHD_DEV_ALL:
+			/* Use maximum BDF value for DEV_ALL */
+			update_last_devid(0xffff);
+			break;
 		case IVHD_DEV_SELECT:
 		case IVHD_DEV_RANGE_END:
 		case IVHD_DEV_ALIAS:
-- 
1.9.1

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