On Tue, Jul 23, 2013 at 07:33:44PM -0300, Paulo Zanoni wrote: > From: Paulo Zanoni <paulo.r.zanoni@xxxxxxxxx> > > As written on our docs, the IIR registers are capable of storing 2 > interrupts, so if we write once to them there's no guarantee they will > become zero. So on this patch we write to the register, read to check > if it's zero, and then write again in case it's needed. > > Also replace I915_WRITE(iir, I915_READ(iir)) with I915_WRITE(iir, > 0xffffffff), and then move the POSTING_READs on IER because we removed > the extra IIR read. Just write(read(iir)) twice and add a comment why. -Chris -- Chris Wilson, Intel Open Source Technology Centre _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/intel-gfx
