Re: [PATCH v5 02/14] driver core: Add dma_cleanup callback in bus_type

Subject: Re: [PATCH v5 02/14] driver core: Add dma_cleanup callback in bus_type
From: Christoph Hellwig <hch@xxxxxxxxxxxxx>
Date: Tue, 4 Jan 2022 02:08:36 -0800
Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>, Joerg Roedel <joro@xxxxxxxxxx>, Alex Williamson <alex.williamson@xxxxxxxxxx>, Bjorn Helgaas <bhelgaas@xxxxxxxxxx>, Jason Gunthorpe <jgg@xxxxxxxxxx>, Christoph Hellwig <hch@xxxxxxxxxxxxx>, Kevin Tian <kevin.tian@xxxxxxxxx>, Ashok Raj <ashok.raj@xxxxxxxxx>, Will Deacon <will@xxxxxxxxxx>, Robin Murphy <robin.murphy@xxxxxxx>, Dan Williams <dan.j.williams@xxxxxxxxx>, rafael@xxxxxxxxxx, Diana Craciun <diana.craciun@xxxxxxxxxxx>, Cornelia Huck <cohuck@xxxxxxxxxx>, Eric Auger <eric.auger@xxxxxxxxxx>, Liu Yi L <yi.l.liu@xxxxxxxxx>, Jacob jun Pan <jacob.jun.pan@xxxxxxxxx>, Chaitanya Kulkarni <kch@xxxxxxxxxx>, Stuart Yoder <stuyoder@xxxxxxxxx>, Laurentiu Tudor <laurentiu.tudor@xxxxxxx>, Thierry Reding <thierry.reding@xxxxxxxxx>, David Airlie <airlied@xxxxxxxx>, Daniel Vetter <daniel@xxxxxxxx>, Jonathan Hunter <jonathanh@xxxxxxxxxx>, Li Yang <leoyang.li@xxxxxxx>, Dmitry Osipenko <digetx@xxxxxxxxx>, iommu@xxxxxxxxxxxxxxxxxxxxxxxxxx, linux-pci@xxxxxxxxxxxxxxx, kvm@xxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx
In-reply-to: <20220104015644.2294354-3-baolu.lu@linux.intel.com>
References: <20220104015644.2294354-1-baolu.lu@linux.intel.com> <20220104015644.2294354-3-baolu.lu@linux.intel.com>

All these bus callouts still looks horrible and just create tons of
boilerplate code.

Follow-Ups:
- Re: [PATCH v5 02/14] driver core: Add dma_cleanup callback in bus_type
  - From: Greg Kroah-Hartman
- Re: [PATCH v5 02/14] driver core: Add dma_cleanup callback in bus_type
  - From: Jason Gunthorpe

References:
- [PATCH v5 00/14] Fix BUG_ON in vfio_iommu_group_notifier()
  - From: Lu Baolu
- [PATCH v5 02/14] driver core: Add dma_cleanup callback in bus_type
  - From: Lu Baolu