From: Dan Carpenter <dan.carpenter@oracle.com>
Date: Mon, 11 Apr 2016 10:14:46 +0300
Subject: iommu/amd: Signedness bug in acpihid_device_group()
Patch-mainline: v4.7-rc1
Git-commit: 2d8e1f039de842701d35a857a7c5d9d47bc1c639
References: fate319479

"devid" needs to be signed for the error handling to work.

Fixes: b097d11a0fa3f ('iommu/amd: Manage iommu_group for ACPI HID devices')
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
---
 drivers/iommu/amd_iommu.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/iommu/amd_iommu.c
+++ b/drivers/iommu/amd_iommu.c
@@ -242,7 +242,7 @@ static struct iommu_dev_data *get_dev_da
 static struct iommu_group *acpihid_device_group(struct device *dev)
 {
 	struct acpihid_map_entry *p, *entry = NULL;
-	u16 devid;
+	int devid;
 
 	devid = get_acpihid_device_id(dev, &entry);
 	if (devid < 0)
