diff options
| author | Josh Zimmerman <joshz@google.com> | 2017-06-25 14:53:23 -0700 |
|---|---|---|
| committer | Sasha Levin <alexander.levin@verizon.com> | 2017-07-31 13:37:55 -0400 |
| commit | 570bc1b52599f132161f873c908676ecf17c1ddd (patch) | |
| tree | 2072d4b8cf0378b65915ac3113ce183a90858e72 | |
| parent | 295f2370dedbf70ecdb98ce51b62beb41d2ca710 (diff) | |
Add "shutdown" to "struct class".
[ Upstream commit f77af15165847406b15d8f70c382c4cb15846b2a ]
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>
Signed-off-by: Sasha Levin <alexander.levin@verizon.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 21d13038534e..ed29f61d1338 100644 --- a/drivers/base/core.c +++ b/drivers/base/core.c @@ -1981,7 +1981,11 @@ 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 6558af90c8fe..98a1d9748eec 100644 --- a/include/linux/device.h +++ b/include/linux/device.h @@ -338,6 +338,7 @@ 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. @@ -366,6 +367,7 @@ 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); |