lkml.org 
[lkml]   [2020]   [Apr]   [7]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[RFC PATCH 06/34] iommu/amd: Return -ENODEV in add_device when device is not handled by IOMMU
Date
From: Joerg Roedel <jroedel@suse.de>

When check_device() fails on the device, it is not handled by the
IOMMU and amd_iommu_add_device() needs to return -ENODEV.

Signed-off-by: Joerg Roedel <jroedel@suse.de>
---
drivers/iommu/amd_iommu.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c
index 504f2db75eda..3e0d27f7622e 100644
--- a/drivers/iommu/amd_iommu.c
+++ b/drivers/iommu/amd_iommu.c
@@ -2157,9 +2157,12 @@ static int amd_iommu_add_device(struct device *dev)
struct amd_iommu *iommu;
int ret, devid;

- if (!check_device(dev) || get_dev_data(dev))
+ if (get_dev_data(dev))
return 0;

+ if (!check_device(dev))
+ return -ENODEV;
+
devid = get_device_id(dev);
if (devid < 0)
return devid;
--
2.17.1
\
 
 \ /
  Last update: 2020-04-07 20:38    [W:0.238 / U:0.064 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site