On Mon, 23 Nov 2009, Rafael J. Wysocki wrote: > On Sunday 22 November 2009, Alan Stern wrote: > > Rafael: > > > > Here's the situation. Device A has children B1, ..., Bn (possibly > > others too). I need to guarantee that whenever A is active, so are the > > children. > > But it's perfectly valid to have an inactive device under an active parent, so > I guess this is not a general case. Correct. It's a specific case that I need to handle for USB. > > Do you have any ideas on how to approach this? How about allowing A's > > runtime_resume method to set A->power.runtime_status to RPM_ACTIVE, > > before it tries to resume the B's? That would avoid the deadlock. > > I don't see a problem with that as long as the A's runtime_resume returns 0 in > such a case. Should I export a routine from the PM core for doing this or just implement it directly? Alan Stern _______________________________________________ linux-pm mailing list linux-pm@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/linux-pm
