On 2010.09.16 13:10:29 +0800, Xiang, Haihao wrote: > > Or can't that be done in init function by using advance_ring? > advance_ring uses ring->tail to set TAIL register, i965_reset() also > invokes ring->init() to re-init ring buffer, how to guarantee ring->tail > is 0? BTW advance_ring can be implemented as set_tail(dev, ring->tail). >
oh, that's bad, not only just for render ring, but ring tail should always be inited correctly, not just in static variable.. -- Open Source Technology Center, Intel ltd. $gpg --keyserver wwwkeys.pgp.net --recv-keys 4D781827
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