drm/virtio: fail init on display-info timeout

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virtio_gpu_init() sends GET_DISPLAY_INFO when scanouts are present and
waits for display_info_pending to clear. If the response never arrives,
the wait result is ignored and probe still succeeds.

Return -ETIMEDOUT on display-info timeout. Because this happens after
virtio_device_ready(), reset the device and tear down modesetting before
using the existing vbuf and virtqueue cleanup path.

Signed-off-by: Pengpeng Hou <pengpeng@iscas.ac.cn>
Signed-off-by: Dmitry Osipenko <dmitry.osipenko@collabora.com>
Link: https://patchwork.freedesktop.org/patch/735301/
[dmitry.osipenko@collabora.com: rebase on misc-next]

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Pengpeng Hou 2026-06-25 11:02:02 +08:00 • committed by Dmitry Osipenko

parent 127d52f9c6

commit 377939b713

1 changed files with 10 additions and 4 deletions

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drivers/gpu/drm/virtio/virtgpu_kms.c

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