On 01/12/17 15:58, Rafael J. Wysocki wrote: > From: Rafael J. Wysocki <[email protected]> > > Prevent rpm_get_suppliers() from returning an error code if runtime > PM is disabled for one or more of the supplier devices it wants to > runtime-resume, so as to make runtime PM work for devices with links > to suppliers that don't use runtime PM (such links may be created > during device enumeration even before it is known whether or not > runtime PM will be enabled for the devices in question, for example). > > Reported-by: Adrian Hunter <[email protected]> > Fixes: 21d5c57b3726 (PM / runtime: Use device links) > Signed-off-by: Rafael J. Wysocki <[email protected]>
Tested-by: Adrian Hunter <[email protected]> > --- > drivers/base/power/runtime.c | 3 ++- > 1 file changed, 2 insertions(+), 1 deletion(-) > > Index: linux-pm/drivers/base/power/runtime.c > =================================================================== > --- linux-pm.orig/drivers/base/power/runtime.c > +++ linux-pm/drivers/base/power/runtime.c > @@ -276,7 +276,8 @@ static int rpm_get_suppliers(struct devi > continue; > > retval = pm_runtime_get_sync(link->supplier); > - if (retval < 0) { > + /* Ignore suppliers with disabled runtime PM. */ > + if (retval < 0 && retval != -EACCES) { > pm_runtime_put_noidle(link->supplier); > return retval; > } > >
