diff options
| author | Joerg Roedel <jroedel@suse.de> | 2017-10-06 15:00:53 +0200 |
|---|---|---|
| committer | Ben Hutchings <ben@decadent.org.uk> | 2018-02-13 18:42:04 +0000 |
| commit | 4bc8c44b31bdf278186fccfa15dea602ad81f8de (patch) | |
| tree | 6398d37c3e61e2d7fc75b7fa5949248be653cad2 /include | |
| parent | b761ef698d4f961218687b8f756cd486f5948a8f (diff) | |
iommu/vt-d: Don't register bus-notifier under dmar_global_lock
commit ec154bf56b276a0bb36079a5d22a267b5f417801 upstream.
The notifier function will take the dmar_global_lock too, so
lockdep complains about inverse locking order when the
notifier is registered under the dmar_global_lock.
Reported-by: Jan Kiszka <jan.kiszka@siemens.com>
Fixes: 59ce0515cdaf ('iommu/vt-d: Update DRHD/RMRR/ATSR device scope caches when PCI hotplug happens')
Signed-off-by: Joerg Roedel <jroedel@suse.de>
[bwh: Backported to 3.16: adjust context]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/dmar.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/dmar.h b/include/linux/dmar.h index 23c8db129560..7052a36f5c80 100644 --- a/include/linux/dmar.h +++ b/include/linux/dmar.h @@ -100,6 +100,7 @@ static inline bool dmar_rcu_check(void) extern int dmar_table_init(void); extern int dmar_dev_scope_init(void); +extern void dmar_register_bus_notifier(void); extern int dmar_parse_dev_scope(void *start, void *end, int *cnt, struct dmar_dev_scope **devices, u16 segment); extern void *dmar_alloc_dev_scope(void *start, void *end, int *cnt); |