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| author | Lu Baolu <baolu.lu@linux.intel.com> | 2022-09-21 10:40:53 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-09-23 14:14:06 +0200 |
| commit | 4d8637f1d67242207410734844ca4b143ac5585e (patch) | |
| tree | 9b1061514317e693aa0b8a49b629d0d59fc32d2a /kernel/time | |
| parent | 36371c3adb7a2fd25bce781077763fa3dad44712 (diff) | |
| download | linux-4d8637f1d67242207410734844ca4b143ac5585e.tar.gz linux-4d8637f1d67242207410734844ca4b143ac5585e.tar.bz2 linux-4d8637f1d67242207410734844ca4b143ac5585e.zip | |
Revert "iommu/vt-d: Fix possible recursive locking in intel_iommu_init()"
commit 7ebb5f8e001037efbdf18afabbbebf71bd98825e upstream.
This reverts commit 9cd4f1434479f1ac25c440c421fbf52069079914.
Some issues were reported on the original commit. Some thunderbolt devices
don't work anymore due to the following DMA fault.
DMAR: DRHD: handling fault status reg 2
DMAR: [INTR-REMAP] Request device [09:00.0] fault index 0x8080
[fault reason 0x25]
Blocked a compatibility format interrupt request
Bring it back for now to avoid functional regression.
Fixes: 9cd4f1434479f ("iommu/vt-d: Fix possible recursive locking in intel_iommu_init()")
Link: https://lore.kernel.org/linux-iommu/485A6EA5-6D58-42EA-B298-8571E97422DE@getmailspring.com/
Link: https://bugzilla.kernel.org/show_bug.cgi?id=216497
Cc: Mika Westerberg <mika.westerberg@linux.intel.com>
Cc: <stable@vger.kernel.org> # 5.19.x
Reported-and-tested-by: George Hilliard <thirtythreeforty@gmail.com>
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Link: https://lore.kernel.org/r/20220920081701.3453504-1-baolu.lu@linux.intel.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'kernel/time')
0 files changed, 0 insertions, 0 deletions