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| author | Mohammed Gamal <mgamal@redhat.com> | 2021-11-19 12:29:00 +0100 |
|---|---|---|
| committer | Deepak Rawat <drawat.floss@gmail.com> | 2021-11-23 10:56:12 -0800 |
| commit | e048834c209a02e3776bcc47d43c6d863e3a67ca (patch) | |
| tree | ea2dd2b5eae21cd8a1369b64e1601924ee5d1587 /drivers/gpu/drm/virtio/virtgpu_ioctl.c | |
| parent | b4a6aaeaf4aa79f23775f6688a7e8db3ee1c1303 (diff) | |
| download | linux-stable-e048834c209a02e3776bcc47d43c6d863e3a67ca.tar.gz linux-stable-e048834c209a02e3776bcc47d43c6d863e3a67ca.tar.bz2 linux-stable-e048834c209a02e3776bcc47d43c6d863e3a67ca.zip | |
drm/hyperv: Fix device removal on Gen1 VMs
The Hyper-V DRM driver tries to free MMIO region on removing
the device regardless of VM type, while Gen1 VMs don't use MMIO
and hence causing the kernel to crash on a NULL pointer dereference.
Fix this by making deallocating MMIO only on Gen2 machines and implement
removal for Gen1
Fixes: 76c56a5affeb ("drm/hyperv: Add DRM driver for hyperv synthetic video device")
Signed-off-by: Mohammed Gamal <mgamal@redhat.com>
Reviewed-by: Deepak Rawat <drawat.floss@gmail.com>
Signed-off-by: Deepak Rawat <drawat.floss@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20211119112900.300537-1-mgamal@redhat.com
Diffstat (limited to 'drivers/gpu/drm/virtio/virtgpu_ioctl.c')
0 files changed, 0 insertions, 0 deletions