diff options
| author | Sravan Kumar Ambapuram <asravan@codeaurora.org> | 2014-03-25 15:00:54 +0530 |
|---|---|---|
| committer | Sravan Kumar Ambapuram <asravan@codeaurora.org> | 2017-03-20 15:32:19 +0530 |
| commit | d36bb30811b9ea1467f9b10a5d701240230147b9 (patch) | |
| tree | 65ee0177e77aace3046e4d3ddac9d7bee970490b /drivers/base/core.c | |
| parent | f39a5999e2473e890390e3a5aa794a2fd4256544 (diff) | |
drivercore: Avoid adding devices without pm_ops to dpm list
Devices without pm_ops are not required to be added in dpm list.
It also helps in improving suspend/resume latencies.
Change-Id: I19a85742fdb6f4d01363b69662ea6d7721a08b3a
Signed-off-by: Sravan Kumar Ambapuram <asravan@codeaurora.org>
Diffstat (limited to 'drivers/base/core.c')
| -rw-r--r-- | drivers/base/core.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/base/core.c b/drivers/base/core.c index bbe8e2efc677..3fa9096b27c2 100644 --- a/drivers/base/core.c +++ b/drivers/base/core.c @@ -1116,7 +1116,13 @@ int device_add(struct device *dev) error = dpm_sysfs_add(dev); if (error) goto DPMError; - device_pm_add(dev); + if ((dev->pm_domain) || (dev->type && dev->type->pm) + || (dev->class && (dev->class->pm || dev->class->resume)) + || (dev->bus && (dev->bus->pm || dev->bus->resume)) || + (dev->driver && dev->driver->pm)) { + device_pm_add(dev); + } + if (MAJOR(dev->devt)) { error = device_create_file(dev, &dev_attr_dev); |