diff options
| author | Joerg Roedel <joerg.roedel@amd.com> | 2012-06-01 15:20:23 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-06-10 00:36:18 +0900 |
| commit | 3e743873ed23bed0ab24ed33a92d960887ccfafa (patch) | |
| tree | 4beacfc5eacba2bdb3034ada87eff3fa4f0a353a /mm/page-writeback.c | |
| parent | 98e69566e80c4de231456dbf4e6735ddfeb599db (diff) | |
iommu/amd: Fix deadlock in ppr-handling error path
commit eee53537c476c947bf7faa1c916d2f5a0ae8ec93 upstream.
In the error path of the ppr_notifer it can happen that the
iommu->lock is taken recursivly. This patch fixes the
problem by releasing the iommu->lock before any notifier is
invoked. This also requires to move the erratum workaround
for the ppr-log (interrupt may be faster than data in the log)
one function up.
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'mm/page-writeback.c')
0 files changed, 0 insertions, 0 deletions