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In the next patch, we will process the CSB events directly from the submission path, rather than only after a CS interrupt. Hence, we will no longer have the need for a loop until the has-interrupt bit is clear, and in the meantime can remove that small optimisation. v2: Tvrtko pointed out it was safer to unconditionally kick the tasklet after each irq, when assuming that the tasklet is called for each irq. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20180628201211.13837-4-chris@chris-wilson.co.uk