Re: [PATCH] Video : Amba: Use in_interrupt() in clcdfb_sleep().
From: richard -rw- weinberger <hidden>
Date: 2012-03-11 13:23:00
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On Sun, Mar 11, 2012 at 2:14 PM, santosh nayak [off-list ref] wrote:
From: Santosh Nayak <redacted> Instead of "in_atomic()", we can use in_interrupt() to check whether its an interrupt context.
What is the benefit? Your change turns clcdfb_sleep() into a ticking bomb. If clcdfb_sleep() is called from an atomic section (e.g. under a spinlock) it will call msleep() and the whole thing explodes... -- Thanks, //richard