On Thu, Nov 21, 2013 at 09:22:58AM +0800, wangbiao wrote:
From: wang, biao biao.wang@intel.com Date: Wed, 20 Nov 2013 17:53:28 +0800 Subject: [PATCH] wm8994: avoid to enable dcs done irq before init completion dcs_done
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once code return from request_threaded_irq, irq was setup enabled by default, but completion var dcs_done not got initialized yet, if then a dcs done irq was raised, system will got hung as the sync mechanism is invalid now.
so this patch try not enable irq when request it until we got things ready.
I would expect to see a patch such as this moving either the interrupt request or (more likely) the completion init. However that's not what this patch does. Why is this? The most obvious thing here would be to move the initialisation of the completion to the start of the probe() function.