| Message ID | 20170714195803.7035-4-joshz@google.com |
|---|---|
| State | New |
| Headers | show |
On Fri, Jul 14, 2017 at 12:58:02PM -0700, Josh Zimmerman wrote: > Backport of commit f77af15165847406b15d8f70c382c4cb15846b2a upstream. > > The TPM class has some common shutdown code that must be executed for > all drivers. This adds some needed functionality for that. > --- > drivers/base/core.c | 6 +++++- > include/linux/device.h | 2 ++ > 2 files changed, 7 insertions(+), 1 deletion(-) You forgot all of the signed-off-by and the like :( I've taken the original patch instead, but please be more careful next time. thanks, greg k-h ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot
diff --git a/drivers/base/core.c b/drivers/base/core.c index f18856f5954b..afe045792796 100644 --- a/drivers/base/core.c +++ b/drivers/base/core.c @@ -2094,7 +2094,11 @@ void device_shutdown(void) pm_runtime_get_noresume(dev); pm_runtime_barrier(dev); - if (dev->bus && dev->bus->shutdown) { + if (dev->class && dev->class->shutdown) { + if (initcall_debug) + dev_info(dev, "shutdown\n"); + dev->class->shutdown(dev); + } else if (dev->bus && dev->bus->shutdown) { if (initcall_debug) dev_info(dev, "shutdown\n"); dev->bus->shutdown(dev); diff --git a/include/linux/device.h b/include/linux/device.h index b8f411b57dcb..3656df6cf638 100644 --- a/include/linux/device.h +++ b/include/linux/device.h @@ -368,6 +368,7 @@ int subsys_virtual_register(struct bus_type *subsys, * @suspend: Used to put the device to sleep mode, usually to a low power * state. * @resume: Used to bring the device from the sleep mode. + * @shutdown: Called at shut-down time to quiesce the device. * @ns_type: Callbacks so sysfs can detemine namespaces. * @namespace: Namespace of the device belongs to this class. * @pm: The default device power management operations of this class. @@ -396,6 +397,7 @@ struct class { int (*suspend)(struct device *dev, pm_message_t state); int (*resume)(struct device *dev); + int (*shutdown)(struct device *dev); const struct kobj_ns_type_operations *ns_type; const void *(*namespace)(struct device *dev);