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Date: Mon, 20 Dec 2010 14:33:13 +0000 From: Mark Brown <broonie@...nsource.wolfsonmicro.com> To: Ben Dooks <ben-linux@...ff.org>, Jean Delvare <khali@...ux-fr.org>, "Rafael J. Wysocki" <rjw@...k.pl>, Alan Stern <stern@...land.harvard.edu> Cc: linux-i2c@...r.kernel.org, linux-kernel@...r.kernel.org, linux-pm@...ts.linux-foundation.org, patches@...nsource.wolfsonmicro.com, Mark Brown <broonie@...nsource.wolfsonmicro.com> Subject: [PATCH 2/2] i2c: Factor out runtime suspend checks from PM operations When devices use dev_pm_ops the I2C API is implementing standard functionality for integration with runtime PM and for checking for the presence of a per device op. The PM core provides pm_generic_ functions implementing this behaviour - use them to reduce coupling with future PM updates. Signed-off-by: Mark Brown <broonie@...nsource.wolfsonmicro.com> --- drivers/i2c/i2c-core.c | 57 ++++++++++++++++-------------------------------- 1 files changed, 19 insertions(+), 38 deletions(-) diff --git a/drivers/i2c/i2c-core.c b/drivers/i2c/i2c-core.c index 6b4cc56..4478557 100644 --- a/drivers/i2c/i2c-core.c +++ b/drivers/i2c/i2c-core.c @@ -196,69 +196,50 @@ static int i2c_device_pm_suspend(struct device *dev) { const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL; - if (pm) { - if (pm_runtime_suspended(dev)) - return 0; - else - return pm->suspend ? pm->suspend(dev) : 0; - } - - return i2c_legacy_suspend(dev, PMSG_SUSPEND); + if (pm) + return pm_generic_suspend(dev); + else + return i2c_legacy_suspend(dev, PMSG_SUSPEND); } static int i2c_device_pm_resume(struct device *dev) { const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL; - int ret; if (pm) - ret = pm->resume ? pm->resume(dev) : 0; + return pm_generic_resume(dev); else - ret = i2c_legacy_resume(dev); - - return ret; + return i2c_legacy_resume(dev); } static int i2c_device_pm_freeze(struct device *dev) { const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL; - if (pm) { - if (pm_runtime_suspended(dev)) - return 0; - else - return pm->freeze ? pm->freeze(dev) : 0; - } - - return i2c_legacy_suspend(dev, PMSG_FREEZE); + if (pm) + return pm_generic_freeze(dev); + else + return i2c_legacy_suspend(dev, PMSG_FREEZE); } static int i2c_device_pm_thaw(struct device *dev) { const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL; - if (pm) { - if (pm_runtime_suspended(dev)) - return 0; - else - return pm->thaw ? pm->thaw(dev) : 0; - } - - return i2c_legacy_resume(dev); + if (pm) + return pm_generic_thaw(dev); + else + return i2c_legacy_resume(dev); } static int i2c_device_pm_poweroff(struct device *dev) { const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL; - if (pm) { - if (pm_runtime_suspended(dev)) - return 0; - else - return pm->poweroff ? pm->poweroff(dev) : 0; - } - - return i2c_legacy_suspend(dev, PMSG_HIBERNATE); + if (pm) + return pm_generic_poweroff(dev); + else + return i2c_legacy_suspend(dev, PMSG_HIBERNATE); } static int i2c_device_pm_restore(struct device *dev) @@ -267,7 +248,7 @@ static int i2c_device_pm_restore(struct device *dev) int ret; if (pm) - ret = pm->restore ? pm->restore(dev) : 0; + ret = pm_generic_restore(dev); else ret = i2c_legacy_resume(dev); -- 1.7.2.3 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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