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Alexandre Courbot authored
commit 579b7c58 upstream. Some devices may not have a PMU. Avoid a NULL pointer dereference in such cases by checking whether the pointer given to nvkm_pmu_pgob() is valid. Signed-off-by: Alexandre Courbot <acourbot@nvidia.com> Signed-off-by: Ben Skeggs <bskeggs@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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