| Message ID | 20170713004121.21750-2-joshz@google.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On Wed, Jul 12, 2017 at 05:41:20PM -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. > > Signed-off-by: Josh Zimmerman <joshz@google.com> Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com> /Jarkko > --- > drivers/base/core.c | 6 +++++- > include/linux/device.h | 2 ++ > 2 files changed, 7 insertions(+), 1 deletion(-) > > diff --git a/drivers/base/core.c b/drivers/base/core.c > index ce057a568673..03a82d017cf1 100644 > --- a/drivers/base/core.c > +++ b/drivers/base/core.c > @@ -2095,7 +2095,11 @@ 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 bc41e87a969b..df850f723264 100644 > --- a/include/linux/device.h > +++ b/include/linux/device.h > @@ -373,6 +373,7 @@ 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. > @@ -401,6 +402,7 @@ 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); > -- > 2.13.2.932.g7449e964c-goog > ------------------------------------------------------------------------------ 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 ce057a568673..03a82d017cf1 100644 --- a/drivers/base/core.c +++ b/drivers/base/core.c @@ -2095,7 +2095,11 @@ 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 bc41e87a969b..df850f723264 100644 --- a/include/linux/device.h +++ b/include/linux/device.h @@ -373,6 +373,7 @@ 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. @@ -401,6 +402,7 @@ 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);
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. Signed-off-by: Josh Zimmerman <joshz@google.com> --- drivers/base/core.c | 6 +++++- include/linux/device.h | 2 ++ 2 files changed, 7 insertions(+), 1 deletion(-)