virtio-mmio: fix device release warning on module unload

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commit c687bc3569 upstream.

Driver core expects devices to be allocated dynamically and complains
loudly when a device that lacks a release function is freed.

Use __root_device_register() to allocate and register the root device
instead of open coding using a static device.

Note that root_device_register(), which also creates a link to the
module, cannot be used as the device is registered when parsing the
module parameters which happens before the module kobject has been set
up.

Fixes: 81a054ce0b ("virtio-mmio: Devices parameter parsing")
Cc: stable@vger.kernel.org	# 3.5
Cc: Pawel Moll <pawel.moll@arm.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Message-ID: <20260427143710.14702-1-johan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

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Johan Hovold 2026-04-27 16:37:10 +02:00 • committed by Greg Kroah-Hartman

parent 1bc67c3fc9

commit 20bbc1e187

1 changed files with 13 additions and 13 deletions

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drivers/virtio/virtio_mmio.c

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