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1) Restore the PCI Express control register after a watchdog reset. This is required because the device will come out of watchdog reset with the pectl reg at its default state, and important BIOS configuration (like max payload size) could be lost. 2) Call mxge_start_locked() for every tx queue before dropping the lock in the watchdog handler. This is required, as the queue's buf ring may have filled during the reset.