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| author | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2013-06-03 21:49:52 +0200 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2013-06-03 21:49:52 +0200 |
| commit | 45f0a85c8258741d11bda25c0a5669c06267204a (patch) | |
| tree | a618cce0583426a5c7f53f56cf19139a6f9733ce /drivers/mfd/ab8500-gpadc.c | |
| parent | cd38ca854de15b26eb91009137cbe157d8a8e773 (diff) | |
| download | linux-45f0a85c8258741d11bda25c0a5669c06267204a.tar.gz linux-45f0a85c8258741d11bda25c0a5669c06267204a.tar.bz2 linux-45f0a85c8258741d11bda25c0a5669c06267204a.zip | |
PM / Runtime: Rework the "runtime idle" helper routine
The "runtime idle" helper routine, rpm_idle(), currently ignores
return values from .runtime_idle() callbacks executed by it.
However, it turns out that many subsystems use
pm_generic_runtime_idle() which checks the return value of the
driver's callback and executes pm_runtime_suspend() for the device
unless that value is not 0. If that logic is moved to rpm_idle()
instead, pm_generic_runtime_idle() can be dropped and its users
will not need any .runtime_idle() callbacks any more.
Moreover, the PCI, SCSI, and SATA subsystems' .runtime_idle()
routines, pci_pm_runtime_idle(), scsi_runtime_idle(), and
ata_port_runtime_idle(), respectively, as well as a few drivers'
ones may be simplified if rpm_idle() calls rpm_suspend() after 0 has
been returned by the .runtime_idle() callback executed by it.
To reduce overall code bloat, make the changes described above.
Tested-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Tested-by: Kevin Hilman <khilman@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Kevin Hilman <khilman@linaro.org>
Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Diffstat (limited to 'drivers/mfd/ab8500-gpadc.c')
| -rw-r--r-- | drivers/mfd/ab8500-gpadc.c | 8 |
1 files changed, 1 insertions, 7 deletions
diff --git a/drivers/mfd/ab8500-gpadc.c b/drivers/mfd/ab8500-gpadc.c index 13f7866de46e..3598b0ecf8c7 100644 --- a/drivers/mfd/ab8500-gpadc.c +++ b/drivers/mfd/ab8500-gpadc.c @@ -886,12 +886,6 @@ static int ab8500_gpadc_runtime_resume(struct device *dev) return ret; } -static int ab8500_gpadc_runtime_idle(struct device *dev) -{ - pm_runtime_suspend(dev); - return 0; -} - static int ab8500_gpadc_suspend(struct device *dev) { struct ab8500_gpadc *gpadc = dev_get_drvdata(dev); @@ -1039,7 +1033,7 @@ static int ab8500_gpadc_remove(struct platform_device *pdev) static const struct dev_pm_ops ab8500_gpadc_pm_ops = { SET_RUNTIME_PM_OPS(ab8500_gpadc_runtime_suspend, ab8500_gpadc_runtime_resume, - ab8500_gpadc_runtime_idle) + NULL) SET_SYSTEM_SLEEP_PM_OPS(ab8500_gpadc_suspend, ab8500_gpadc_resume) |