Messages in this thread | | | From | "Rafael J. Wysocki" <> | Date | Wed, 19 Oct 2016 13:57:12 +0200 | Subject | Re: [PATCH v5 0/5] Functional dependencies between devices |
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On Tue, Oct 18, 2016 at 12:46 PM, Marek Szyprowski <m.szyprowski@samsung.com> wrote: > Hi Rafael, > > > On 2016-10-10 14:36, Rafael J. Wysocki wrote: >> >> [...] >> >> One more update after some conversations during LinuxCon Europe. >> >> The main point was to make it possible for device_link_add() to figure out >> the >> initial state of the link instead of expecting the caller to provide it >> which >> might not be reliable enough in general. >> >> In this version device_link_add() takes three arguments, the supplier and >> consumer pointers and flags and it sets the correct initial state of the >> link >> automatically (unless invoked with the "stateless" flag, of course). The >> cost >> is one additional field in struct device (I moved all of the links-related >> fields in struct device to a separate sub-structure while at it) to track >> the "driver presence status" of the device (to be used by >> device_link_add()). >> >> In addition to that, the links list walks in the core.c and dd.c code are >> under the device links mutex now, so the iternal link spinlock is not >> needed >> any more and I have renamed symbols to distinguish between flags, link >> states >> and device "driver presence statuses". >> >> More information is there in the changelogs. > > > Thanks for the update. This version is indeed easier to use and still works > fine > with my Exynos IOMMU runtime pm rework. You can keep my: > > Tested-by: Marek Szyprowski <m.szyprowski@samsung.com> > > I will send updated version of my patchset soon.
Thanks for the testing, much appreciated!
The series is in a new branch called "device-links-test" in my tree now:
git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm.git device-links-test
Thanks, Rafael
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