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Mohammed Gamal
e048834c20
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: 76c56a5aff ("drm/hyperv: Add DRM driver for hyperv synthetic video device")
Signed-off-by: Mohammed Gamal <[email protected]>
Reviewed-by: Deepak Rawat <[email protected]>
Signed-off-by: Deepak Rawat <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]