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To: Randy Dunlap <randy.dunlap@oracle.com>
Cc: Voluspa <lista1@comhem.se>, linux-kernel@vger.kernel.org,
       akpm <akpm@osdl.org>, len.brown@intel.com
Subject: Re: [UBUNTU:acpi/ec] Use semaphore instead of spinlock
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From: Roland Dreier <rdreier@cisco.com>
Date: Wed, 14 Jun 2006 22:45:03 -0700
In-Reply-To: <4490B48E.5060304@oracle.com> (Randy Dunlap's message of "Wed, 14 Jun 2006 18:14:54 -0700")
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 > [UBUNTU:acpi/ec] Use semaphore instead of spinlock to get rid of missed
 > interrupts on ACPI EC (embedded controller)

 > -		spinlock_t lock;
 > +		struct semaphore sem;

 > +	init_MUTEX(&ec->poll.sem);

I think nowadays this should be a struct mutex...