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Make the PM core avoid invoking the "late" and "noirq" system-wide suspend (or analogous) callbacks provided by device drivers directly for devices with DPM_FLAG_SMART_SUSPEND set that are in runtime suspend during the "late" and "noirq" phases of system-wide suspend (or analogous) transitions. That is only done for devices without any middle-layer "late" and "noirq" suspend callbacks (to avoid confusing the middle layer if there is one). The underlying observation is that runtime PM is disabled for devices during the "late" and "noirq" system-wide suspend phases, so if they remain in runtime suspend from the "late" phase forward, it doesn't make sense to invoke the "late" and "noirq" callbacks provided by the drivers for them (arguably, the device is already suspended and in the right state). Thus, if the remaining driver suspend callbacks are to be invoked directly by the core, they can be skipped. This change really makes it possible for, say, platform device drivers to re-use runtime PM suspend and resume callbacks by pointing ->suspend_late and ->resume_early, respectively (and possibly the analogous hibernation-related callback pointers too), to them without adding any extra "is the device already suspended?" type of checks to the callback routines, as long as they will be invoked directly by the core. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> |
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| .. | ||
| 80211 | ||
| dmaengine | ||
| firmware | ||
| iio | ||
| pm | ||
| usb | ||
| basics.rst | ||
| conf.py | ||
| device_link.rst | ||
| device-io.rst | ||
| dma-buf.rst | ||
| edac.rst | ||
| frame-buffer.rst | ||
| gpio.rst | ||
| hsi.rst | ||
| i2c.rst | ||
| index.rst | ||
| infrastructure.rst | ||
| input.rst | ||
| libata.rst | ||
| message-based.rst | ||
| misc_devices.rst | ||
| miscellaneous.rst | ||
| mtdnand.rst | ||
| pci.rst | ||
| pinctl.rst | ||
| rapidio.rst | ||
| regulator.rst | ||
| s390-drivers.rst | ||
| scsi.rst | ||
| sound.rst | ||
| spi.rst | ||
| uio-howto.rst | ||
| vme.rst | ||
| w1.rst | ||