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amd-gpu: barriers in ringbuffer submit to ensure that the buffer is posted first

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Matt Sealey
2012-12-10 18:36:59 -06:00
parent 0c0087fe73
commit be53471e10
1 changed files with 3 additions and 0 deletions
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3
drivers/mxc/amd-gpu/gsl_ringbuffer.c
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@@ -349,6 +349,9 @@ kgsl_ringbuffer_submit(gsl_ringbuffer_t *rb)
kgsl_device_active(rb->device);
GSL_RB_UPDATE_WPTR_POLLING(rb);
dsb();
wmb();
mb();
// send the wptr to the hw
rb->device->ftbl.device_regwrite(rb->device, mmCP_RB_WPTR, rb->wptr);