drm/nouveau/bar/nv50: ensure BAR is mapped
If the BAR is zero size, it indicates it was never successfully mapped. Ensure that the BAR is valid during initialization before attempting to use it. Signed-off-by:Jon Derrick <jonathan.derrick@intel.com> Signed-off-by:
Ben Skeggs <bskeggs@redhat.com>
parent
307a312d
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