dmaengine: altera: fix spinlock usage
Since this lock is acquired in both process and IRQ context, failing to to disable IRQs when trying to acquire the lock in process context can lead to deadlocks. Signed-off-by: Sylvain Lesne <lesne@alse-fr.com> Reviewed-by: Stefan Roese <sr@denx.de> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
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d9ec4641
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