Hi Greg at al, This is on top of the series I posted on Thursday last week:
https://lore.kernel.org/lkml/2493187.oiopcwj...@aspire.rjw.lan/ and the purpose here is to (1) clean up the remaining device link management issues mentioned in the cover letter above and (2) make device links support the "composite device" use case mentioned during the recent discussion on possibly using device links in the DRM subsystem (see for example https://marc.info/?l=linux-pm&m=154832771905309&w=2). Patch [1/4] simply makes two IOMMU drivers pass DL_FLAG_STATELESS to device_link_add(), because the cleanup part of their device links handling will not work any more after patch [2/4] and there is no reason why those links cannot be stateless AFAICS. Patch [2/4] can be regarded as a fix as it cleans up some link management issues related to device links reference counting and stateful (managed) device links. Patch [3/4] add a "consumer autoprobe" flag causing the driver core to probe consumer drivers automatically after binding the supplier driver for persistent managed device links. Patch [4/4] is just another fix on top of the previous series of device links patches and it doesn't depend on patches [1-3/4]. For easier testing I have created a git branch containing these patches along with the previous series (including the v2 of the 5th patch) which can be pulled from: git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm.git \ device-links (not that this branch may be rebased in the future). Cheers, Rafael
