diff options
| author | Josh Zimmerman <joshz@google.com> | 2017-06-25 14:53:23 -0700 |
|---|---|---|
| committer | James Morris <james.l.morris@oracle.com> | 2017-07-07 09:49:24 +1000 |
| commit | f77af15165847406b15d8f70c382c4cb15846b2a (patch) | |
| tree | 4941098b00f641bfe02658b9204f7cd00e05e52b | |
| parent | b4b8cbf679c4866a523a35d1454884a31bd5d8dc (diff) | |
| download | linux-f77af15165847406b15d8f70c382c4cb15846b2a.tar.bz2 | |
Add "shutdown" to "struct class".
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>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: stable@vger.kernel.org
Fixes: 74d6b3ceaa17 ("tpm: fix suspend/resume paths for TPM 2.0")
Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Tested-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: James Morris <james.l.morris@oracle.com>
| -rw-r--r-- | drivers/base/core.c | 6 | ||||
| -rw-r--r-- | include/linux/device.h | 2 |
2 files changed, 7 insertions, 1 deletions
diff --git a/drivers/base/core.c b/drivers/base/core.c index 8dde934f8d15..755451f684bc 100644 --- a/drivers/base/core.c +++ b/drivers/base/core.c @@ -2664,7 +2664,11 @@ 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 6baa1238f158..723cd54b94da 100644 --- a/include/linux/device.h +++ b/include/linux/device.h @@ -375,6 +375,7 @@ 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. @@ -403,6 +404,7 @@ 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); |