Tony Lindgren 814a3c0c2a mmc: omap_hsmmc: Fix PM regression with deferred probe for pm_runtime_reinit ... Commit 5de85b9d57 ("PM / runtime: Re-init runtime PM states at probe error and driver unbind") introduced pm_runtime_reinit() that is used to reinitialize PM runtime after -EPROBE_DEFER. This allows shutting down the device after a failed probe. However, for drivers using pm_runtime_use_autosuspend() this can cause a state where suspend callback is never called after -EPROBE_DEFER. On the following device driver probe, hardware state is different from the PM runtime state causing omap_device to produce the following error: omap_device_enable() called from invalid state 1 And with omap_device and omap hardware being picky for PM, this will block any deeper idle states in hardware. The solution is to fix the drivers to follow the PM runtime documentation: 1. For sections of code that needs the device disabled, use pm_runtime_put_sync_suspend() if pm_runtime_set_autosuspend() has been set. 2. For driver exit code, use pm_runtime_dont_use_autosuspend() before pm_runtime_put_sync() if pm_runtime_use_autosuspend() has been set. Fixes: 5de85b9d57 ("PM / runtime: Re-init runtime PM states at probe error and driver unbind") Cc: linux-mmc@vger.kernel.org Cc: Alan Stern <stern@rowland.harvard.edu> Cc: Kevin Hilman <khilman@baylibre.com> Cc: Nishanth Menon <nm@ti.com> Cc: Rafael J. Wysocki <rafael@kernel.org> Cc: Ulf Hansson <ulf.hansson@linaro.org> Cc: Tero Kristo <t-kristo@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>		2016-02-15 14:10:48 +01:00
..
card	Revert "mmc: block: don't use parameter prefix if built as module"	2016-02-11 16:49:35 +01:00
core	mmc: pwrseq_simple: Make reset-gpios optional to match doc	2016-01-21 13:52:27 +01:00
host	mmc: omap_hsmmc: Fix PM regression with deferred probe for pm_runtime_reinit	2016-02-15 14:10:48 +01:00
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