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Stephan Gerhold 26d824d131 virtio_mmio: Add missing PM calls to freeze/restore 
[ Upstream commit ed7ac37fde33ccd84e4bd2b9363c191f925364c7 ]

Most virtio drivers provide freeze/restore callbacks to finish up
device usage before suspend and to reinitialize the virtio device after
resume. However, these callbacks are currently only called when using
virtio_pci. virtio_mmio does not have any PM ops defined.

This causes problems for example after suspend to disk (hibernation),
since the virtio devices might lose their state after the VMM is
restarted. Calling virtio_device_freeze()/restore() ensures that
the virtio devices are re-initialized correctly.

Fix this by implementing the dev_pm_ops for virtio_mmio,
similar to virtio_pci_common.

Signed-off-by: Stephan Gerhold <stephan.gerhold@kernkonzept.com>
Message-Id: <20220621110621.3638025-2-stephan.gerhold@kernkonzept.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2022-07-21 21:24:33 +02:00
..
Kconfig
virtio-pci: introduce modern device module
2021-02-23 07:52:58 -05:00
Makefile
virtio-pci: introduce modern device module
2021-02-23 07:52:58 -05:00
virtio_balloon.c
virtio-balloon: Use virtio_find_vqs() helper
2021-09-06 07:20:56 -04:00
virtio_dma_buf.c
virtio: fix build for configs without dma-bufs
2020-08-19 06:43:28 +02:00
virtio_input.c
virtio-input: add multi-touch support
2021-02-23 07:52:59 -05:00
virtio_mem.c
virtio/virtio_mem: handle a possible NULL as a memcpy parameter
2022-01-27 11:02:59 +01:00
virtio_mmio.c
virtio_mmio: Add missing PM calls to freeze/restore
2022-07-21 21:24:33 +02:00
virtio_pci_common.c
virtio-pci: Remove wrong address verification in vp_del_vqs()
2022-06-22 14:22:05 +02:00
virtio_pci_common.h
virtio-pci: introduce modern device module
2021-02-23 07:52:58 -05:00
virtio_pci_legacy.c
…
virtio_pci_modern_dev.c
virtio: pci: Fix an error handling path in vp_modern_probe()
2022-06-14 18:36:12 +02:00
virtio_pci_modern.c
virtio_pci_modern: __force cast the notify mapping
2021-05-04 04:19:58 -04:00
virtio_ring.c
virtio_ring: mark ring unused on error
2022-01-27 11:05:35 +01:00
virtio_vdpa.c
virtio_vdpa: reject invalid vq indices
2021-08-11 06:44:23 -04:00
virtio.c
virtio: acknowledge all features before access
2022-03-16 14:23:43 +01:00