Messages in this thread | | | Date | Mon, 7 Nov 2016 22:22:50 +0100 | From | "Luis R. Rodriguez" <> | Subject | Re: [PATCH v5 2/5] driver core: Functional dependencies tracking support |
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On Thu, Oct 27, 2016 at 05:25:51PM +0200, Greg Kroah-Hartman wrote: > On Wed, Oct 26, 2016 at 01:19:02PM +0200, Lukas Wunner wrote: > > Hi Rafael, > > > > sorry for not responding to v5 of your series earlier, just sending > > this out now in the hope that it reaches you before your travels. > > > > On Mon, Oct 10, 2016 at 02:51:04PM +0200, Rafael J. Wysocki wrote: > > > - Modify device_links_check_suppliers(), device_links_driver_bound(), > > > device_links_no_driver(), device_links_driver_cleanup(), device_links_busy(), > > > and device_links_unbind_consumers() to walk link lists under device_links_lock > > > (to make the new "driver presence tracking" mechanism work reliably). > > > > This change might increase boot time if drivers return -EPROBE_DEFER. > > "might"? Please verify this before guessing.... > > And don't make this more complex than needed before actually determining > a real issue.
As clarified by Rafael at Plumbers, this functional dependencies framework assumes your driver / subsystem supports deferred probe, if it does not support its not clear what will happen....
We have no explicit semantics to check if a driver / subsystem supports deferred probe.
Luis
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