070c0ee1ef
Both when polling the current turbo status (in poll_turbo_status mode) and when handling thermal events (in ips_irq_handler) the current status of GPU turbo is updated to match the hardware status. However if during driver initialisation we were unable aquire linkage to the i915 driver enabling GPU turbo will lead to an oops on the first attempt to determine GPU busy status. Ensure that we do not enable GPU turbo unless we have driver linkage. BugLink: http://bugs.launchpad.net/bugs/632430 Cc: stable@kernel.org Signed-off-by: Andy Whitcroft <apw@canonical.com> Signed-off-by: Matthew Garrett <mjg@redhat.com> |
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