diff options
| author | Dan Williams <dan.j.williams@intel.com> | 2022-01-31 22:50:09 +0300 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2022-02-09 09:57:29 +0300 |
| commit | 3c5b903955251ea464fca383a42d981e33004df6 (patch) | |
| tree | c4ff8665db9ad785d73be3a5ec462964e2148b86 /drivers/cxl/acpi.c | |
| parent | 53fa1bff3426344d466d91e81f076eab677d0ece (diff) | |
| download | linux-3c5b903955251ea464fca383a42d981e33004df6.tar.xz | |
cxl: Prove CXL locking
When CONFIG_PROVE_LOCKING is enabled the 'struct device' definition gets
an additional mutex that is not clobbered by
lockdep_set_novalidate_class() like the typical device_lock(). This
allows for local annotation of subsystem locks with mutex_lock_nested()
per the subsystem's object/lock hierarchy. For CXL, this primarily needs
the ability to lock ports by depth and child objects of ports by their
parent parent-port lock.
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Ben Widawsky <ben.widawsky@intel.com>
Link: https://lore.kernel.org/r/164365853422.99383.1052399160445197427.stgit@dwillia2-desk3.amr.corp.intel.com
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'drivers/cxl/acpi.c')
| -rw-r--r-- | drivers/cxl/acpi.c | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/drivers/cxl/acpi.c b/drivers/cxl/acpi.c index 4e8086525edc..93d1dc56892a 100644 --- a/drivers/cxl/acpi.c +++ b/drivers/cxl/acpi.c @@ -176,14 +176,14 @@ static struct cxl_dport *find_dport_by_dev(struct cxl_port *port, struct device { struct cxl_dport *dport; - device_lock(&port->dev); + cxl_device_lock(&port->dev); list_for_each_entry(dport, &port->dports, list) if (dport->dport == dev) { - device_unlock(&port->dev); + cxl_device_unlock(&port->dev); return dport; } - device_unlock(&port->dev); + cxl_device_unlock(&port->dev); return NULL; } @@ -264,9 +264,9 @@ static int add_host_bridge_uport(struct device *match, void *arg) if (IS_ERR(cxld)) return PTR_ERR(cxld); - device_lock(&port->dev); + cxl_device_lock(&port->dev); dport = list_first_entry(&port->dports, typeof(*dport), list); - device_unlock(&port->dev); + cxl_device_unlock(&port->dev); single_port_map[0] = dport->port_id; |