On Fri, 18 Sep 2015, Rafael J. Wysocki wrote: > From: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx> > > Section 3.2 "Device Runtime Power Management" of pci.txt has become > outdated, so update it to correctly reflect the current code flow. > > Also update the comment in local_pci_probe() to document the fact > that pm_runtime_put_noidle() is not the only runtime PM helper > function that can be used to decrement the device's runtime PM > usage counter in .probe(). > > Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx> > --- > Documentation/power/pci.txt | 51 ++++++++++++++++++++++++++++++++------------ > drivers/pci/pci-driver.c | 7 +++--- > 2 files changed, 42 insertions(+), 16 deletions(-) > > Index: linux-pm/Documentation/power/pci.txt > =================================================================== > --- linux-pm.orig/Documentation/power/pci.txt > +++ linux-pm/Documentation/power/pci.txt > @@ -979,20 +979,45 @@ every time right after the runtime_resum ... > +It is important to remember that the driver's runtime_suspend() callback > +may be executed right after the usage counter has been decremented, because > +user space may already have cuased the pm_runtime_allow() helper function s/cuased/caused/. Otherwise, Acked-by: Alan Stern <stern@xxxxxxxxxxxxxxxxxxx> -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
