On 12/26/2009 11:11 PM, Dan Kruchinin wrote: >> You need a memory clobber here. >> You need to add a clobber to Operand 1. > > I added "memory" to the clobber list of spin_unlock, but it doesn't help. > I still have the same problem. You need to add a clobber to Operand 1 too. Andrew.