diff options
Diffstat (limited to 'drivers/ntb/ntb_transport.c')
| -rw-r--r-- | drivers/ntb/ntb_transport.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/ntb/ntb_transport.c b/drivers/ntb/ntb_transport.c index 4f775c3e218f..eb875e3db2e3 100644 --- a/drivers/ntb/ntb_transport.c +++ b/drivers/ntb/ntb_transport.c @@ -59,6 +59,7 @@ #include <linux/slab.h> #include <linux/types.h> #include <linux/uaccess.h> +#include <linux/mutex.h> #include "linux/ntb.h" #include "linux/ntb_transport.h" @@ -241,6 +242,9 @@ struct ntb_transport_ctx { struct work_struct link_cleanup; struct dentry *debugfs_node_dir; + + /* Make sure workq of link event be executed serially */ + struct mutex link_event_lock; }; enum { @@ -1024,6 +1028,7 @@ static void ntb_transport_link_cleanup_work(struct work_struct *work) struct ntb_transport_ctx *nt = container_of(work, struct ntb_transport_ctx, link_cleanup); + guard(mutex)(&nt->link_event_lock); ntb_transport_link_cleanup(nt); } @@ -1047,6 +1052,8 @@ static void ntb_transport_link_work(struct work_struct *work) u32 val; int rc = 0, i, spad; + guard(mutex)(&nt->link_event_lock); + /* send the local info, in the opposite order of the way we read it */ if (nt->use_msi) { |